./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/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_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:04,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:05,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 01:03:05,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:05,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:05,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:05,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:05,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:05,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:05,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:05,118 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:05,120 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:05,120 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:05,122 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:05,122 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:05,123 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:05,123 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:05,124 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:05,124 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:05,125 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:05,125 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:05,126 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:05,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:05,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:03:05,128 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:05,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:05,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:05,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:05,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:03:05,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:05,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:03:05,132 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 01:03:05,132 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:05,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:05,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:03:05,133 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:05,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:05,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:05,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:05,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:05,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:05,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:03:05,135 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:05,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:05,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:03:05,136 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:05,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:05,137 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_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae3736aabcb020d122100864e41791456e1f94490735ab1a93eef5c54883fe7 [2023-11-12 01:03:05,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:05,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:05,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:05,434 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:05,434 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:05,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2023-11-12 01:03:08,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:09,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:09,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2023-11-12 01:03:09,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/data/eadc238a7/715d0970fdd04dd8a59975f920f701c9/FLAGbf309ad72 [2023-11-12 01:03:09,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/data/eadc238a7/715d0970fdd04dd8a59975f920f701c9 [2023-11-12 01:03:09,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:09,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:09,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:09,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:09,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:09,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c64cb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09, skipping insertion in model container [2023-11-12 01:03:09,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:09,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:09,381 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:09,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:09,426 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:09,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09 WrapperNode [2023-11-12 01:03:09,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:09,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:09,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:09,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:09,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,487 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 176 [2023-11-12 01:03:09,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:09,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:09,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:09,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:09,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:09,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:09,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:09,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:09,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:09,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:09,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:03:09,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:09,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:09,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:09,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:10,228 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:10,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:10,265 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:03:10,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:10 BoogieIcfgContainer [2023-11-12 01:03:10,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:10,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:10,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:10,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:10,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:09" (1/3) ... [2023-11-12 01:03:10,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad1ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:10, skipping insertion in model container [2023-11-12 01:03:10,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (2/3) ... [2023-11-12 01:03:10,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad1ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:10, skipping insertion in model container [2023-11-12 01:03:10,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:10" (3/3) ... [2023-11-12 01:03:10,280 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2023-11-12 01:03:10,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:10,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-12 01:03:10,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:10,384 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;@7ff85b4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:10,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-12 01:03:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 82 states have (on average 1.975609756097561) internal successors, (162), 142 states have internal predecessors, (162), 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 01:03:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 01:03:10,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:10,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 01:03:10,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash 8204659, now seen corresponding path program 1 times [2023-11-12 01:03:10,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56102277] [2023-11-12 01:03:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:10,607 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 01:03:10,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56102277] [2023-11-12 01:03:10,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56102277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:10,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:10,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299154153] [2023-11-12 01:03:10,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:10,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:10,647 INFO L87 Difference]: Start difference. First operand has 143 states, 82 states have (on average 1.975609756097561) internal successors, (162), 142 states have internal predecessors, (162), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:10,832 INFO L93 Difference]: Finished difference Result 271 states and 307 transitions. [2023-11-12 01:03:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 01:03:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:10,845 INFO L225 Difference]: With dead ends: 271 [2023-11-12 01:03:10,845 INFO L226 Difference]: Without dead ends: 131 [2023-11-12 01:03:10,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:10,853 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:10,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 179 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-12 01:03:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-12 01:03:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 130 states have internal predecessors, (140), 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 01:03:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2023-11-12 01:03:10,895 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 4 [2023-11-12 01:03:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:10,895 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2023-11-12 01:03:10,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2023-11-12 01:03:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:03:10,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:10,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:10,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:03:10,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:10,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1382302023, now seen corresponding path program 1 times [2023-11-12 01:03:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717197917] [2023-11-12 01:03:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,002 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 01:03:11,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717197917] [2023-11-12 01:03:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717197917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274668758] [2023-11-12 01:03:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:11,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:11,007 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 01:03:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:11,207 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2023-11-12 01:03:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 01:03:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:11,209 INFO L225 Difference]: With dead ends: 131 [2023-11-12 01:03:11,209 INFO L226 Difference]: Without dead ends: 113 [2023-11-12 01:03:11,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:11,212 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:11,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 72 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-12 01:03:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-12 01:03:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 112 states have internal predecessors, (122), 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 01:03:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2023-11-12 01:03:11,222 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 8 [2023-11-12 01:03:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:11,222 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2023-11-12 01:03:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 01:03:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2023-11-12 01:03:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 01:03:11,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:11,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:11,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:03:11,224 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:11,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash 98310300, now seen corresponding path program 1 times [2023-11-12 01:03:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257888804] [2023-11-12 01:03:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,279 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 01:03:11,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257888804] [2023-11-12 01:03:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257888804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137503839] [2023-11-12 01:03:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,283 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:11,404 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2023-11-12 01:03:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 01:03:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:11,407 INFO L225 Difference]: With dead ends: 113 [2023-11-12 01:03:11,407 INFO L226 Difference]: Without dead ends: 95 [2023-11-12 01:03:11,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,418 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 37 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:11,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 81 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-12 01:03:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-12 01:03:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 94 states have internal predecessors, (104), 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 01:03:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2023-11-12 01:03:11,433 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 9 [2023-11-12 01:03:11,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:11,433 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2023-11-12 01:03:11,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2023-11-12 01:03:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:03:11,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:11,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:03:11,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:11,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1241252709, now seen corresponding path program 1 times [2023-11-12 01:03:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211873791] [2023-11-12 01:03:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,486 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 01:03:11,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211873791] [2023-11-12 01:03:11,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211873791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:11,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075172945] [2023-11-12 01:03:11,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:11,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:11,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:11,489 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 01:03:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:11,606 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2023-11-12 01:03:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 01:03:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:11,607 INFO L225 Difference]: With dead ends: 175 [2023-11-12 01:03:11,607 INFO L226 Difference]: Without dead ends: 89 [2023-11-12 01:03:11,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:11,620 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:11,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 152 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-12 01:03:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-12 01:03:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 88 states have internal predecessors, (97), 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 01:03:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2023-11-12 01:03:11,633 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 10 [2023-11-12 01:03:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:11,633 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2023-11-12 01:03:11,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 01:03:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2023-11-12 01:03:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:03:11,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:11,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:03:11,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:11,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1169723233, now seen corresponding path program 1 times [2023-11-12 01:03:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414665432] [2023-11-12 01:03:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,697 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 01:03:11,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414665432] [2023-11-12 01:03:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414665432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:03:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211968522] [2023-11-12 01:03:11,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:11,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,700 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:11,742 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2023-11-12 01:03:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 01:03:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:11,744 INFO L225 Difference]: With dead ends: 89 [2023-11-12 01:03:11,744 INFO L226 Difference]: Without dead ends: 81 [2023-11-12 01:03:11,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,746 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:11,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 64 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-12 01:03:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-12 01:03:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 80 states have internal predecessors, (89), 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 01:03:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2023-11-12 01:03:11,753 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 14 [2023-11-12 01:03:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:11,753 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2023-11-12 01:03:11,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2023-11-12 01:03:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 01:03:11,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:11,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:11,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:03:11,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:11,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1901682098, now seen corresponding path program 1 times [2023-11-12 01:03:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29301408] [2023-11-12 01:03:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,810 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 01:03:11,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29301408] [2023-11-12 01:03:11,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29301408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:03:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630110428] [2023-11-12 01:03:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,814 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:11,862 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2023-11-12 01:03:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:11,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 01:03:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:11,864 INFO L225 Difference]: With dead ends: 144 [2023-11-12 01:03:11,865 INFO L226 Difference]: Without dead ends: 136 [2023-11-12 01:03:11,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:11,866 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 59 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:11,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 120 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-12 01:03:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-12 01:03:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 135 states have internal predecessors, (151), 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 01:03:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2023-11-12 01:03:11,876 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 15 [2023-11-12 01:03:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:11,877 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2023-11-12 01:03:11,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2023-11-12 01:03:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 01:03:11,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:11,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:11,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:03:11,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:11,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash 921603089, now seen corresponding path program 1 times [2023-11-12 01:03:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769662439] [2023-11-12 01:03:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:11,978 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 01:03:11,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769662439] [2023-11-12 01:03:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769662439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380332050] [2023-11-12 01:03:11,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:11,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:11,983 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:12,058 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2023-11-12 01:03:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-12 01:03:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:12,061 INFO L225 Difference]: With dead ends: 190 [2023-11-12 01:03:12,061 INFO L226 Difference]: Without dead ends: 183 [2023-11-12 01:03:12,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:12,063 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 110 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:12,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 161 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-12 01:03:12,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-11-12 01:03:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.152542372881356) internal successors, (204), 182 states have internal predecessors, (204), 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 01:03:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2023-11-12 01:03:12,082 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 21 [2023-11-12 01:03:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:12,082 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2023-11-12 01:03:12,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2023-11-12 01:03:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 01:03:12,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:12,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:12,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:03:12,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:12,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash -890255111, now seen corresponding path program 1 times [2023-11-12 01:03:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731064552] [2023-11-12 01:03:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:12,257 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 01:03:12,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731064552] [2023-11-12 01:03:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731064552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:12,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:12,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648668607] [2023-11-12 01:03:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:12,260 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:12,378 INFO L93 Difference]: Finished difference Result 228 states and 254 transitions. [2023-11-12 01:03:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 01:03:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:12,380 INFO L225 Difference]: With dead ends: 228 [2023-11-12 01:03:12,381 INFO L226 Difference]: Without dead ends: 222 [2023-11-12 01:03:12,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:12,382 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 153 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:12,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 195 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-12 01:03:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-11-12 01:03:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1428571428571428) internal successors, (248), 221 states have internal predecessors, (248), 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 01:03:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2023-11-12 01:03:12,390 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 27 [2023-11-12 01:03:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:12,390 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2023-11-12 01:03:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:12,390 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2023-11-12 01:03:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 01:03:12,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:12,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 01:03:12,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1831843414, now seen corresponding path program 1 times [2023-11-12 01:03:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302303644] [2023-11-12 01:03:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:12,525 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 01:03:12,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:12,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302303644] [2023-11-12 01:03:12,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302303644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:12,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221950031] [2023-11-12 01:03:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:03:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:03:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:12,528 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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 01:03:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:12,634 INFO L93 Difference]: Finished difference Result 346 states and 387 transitions. [2023-11-12 01:03:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:12,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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) Word has length 33 [2023-11-12 01:03:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:12,637 INFO L225 Difference]: With dead ends: 346 [2023-11-12 01:03:12,637 INFO L226 Difference]: Without dead ends: 193 [2023-11-12 01:03:12,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:12,639 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:12,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-12 01:03:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-12 01:03:12,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.1375661375661377) internal successors, (215), 192 states have internal predecessors, (215), 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 01:03:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2023-11-12 01:03:12,646 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 33 [2023-11-12 01:03:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:12,646 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2023-11-12 01:03:12,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 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 01:03:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2023-11-12 01:03:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 01:03:12,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:12,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:12,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:03:12,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:12,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 602256755, now seen corresponding path program 1 times [2023-11-12 01:03:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032306607] [2023-11-12 01:03:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:12,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:12,719 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 01:03:12,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:12,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032306607] [2023-11-12 01:03:12,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032306607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:12,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:12,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:03:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473353635] [2023-11-12 01:03:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:03:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:03:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:12,722 INFO L87 Difference]: Start difference. First operand 193 states and 215 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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 01:03:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:12,833 INFO L93 Difference]: Finished difference Result 292 states and 326 transitions. [2023-11-12 01:03:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 01:03:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2023-11-12 01:03:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:12,835 INFO L225 Difference]: With dead ends: 292 [2023-11-12 01:03:12,835 INFO L226 Difference]: Without dead ends: 164 [2023-11-12 01:03:12,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:03:12,837 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:12,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 102 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-12 01:03:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-12 01:03:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 1.1304347826086956) internal successors, (182), 163 states have internal predecessors, (182), 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 01:03:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2023-11-12 01:03:12,846 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 37 [2023-11-12 01:03:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:12,848 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2023-11-12 01:03:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 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 01:03:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2023-11-12 01:03:12,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 01:03:12,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:12,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:12,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 01:03:12,856 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:12,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 456847740, now seen corresponding path program 1 times [2023-11-12 01:03:12,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:12,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467056524] [2023-11-12 01:03:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:12,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:12,976 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 01:03:12,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467056524] [2023-11-12 01:03:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467056524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:12,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 01:03:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692819616] [2023-11-12 01:03:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 01:03:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 01:03:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:03:12,979 INFO L87 Difference]: Start difference. First operand 164 states and 182 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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 01:03:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:13,078 INFO L93 Difference]: Finished difference Result 238 states and 265 transitions. [2023-11-12 01:03:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:03:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2023-11-12 01:03:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:13,080 INFO L225 Difference]: With dead ends: 238 [2023-11-12 01:03:13,080 INFO L226 Difference]: Without dead ends: 135 [2023-11-12 01:03:13,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 01:03:13,081 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:13,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-12 01:03:13,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-12 01:03:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 134 states have internal predecessors, (149), 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 01:03:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2023-11-12 01:03:13,086 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 41 [2023-11-12 01:03:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:13,087 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2023-11-12 01:03:13,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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 01:03:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2023-11-12 01:03:13,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-12 01:03:13,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:13,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:13,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 01:03:13,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:13,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1209147963, now seen corresponding path program 1 times [2023-11-12 01:03:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653155040] [2023-11-12 01:03:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:13,189 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 01:03:13,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:13,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653155040] [2023-11-12 01:03:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653155040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:13,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 01:03:13,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69249433] [2023-11-12 01:03:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:13,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 01:03:13,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 01:03:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:13,192 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 01:03:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:13,276 INFO L93 Difference]: Finished difference Result 184 states and 204 transitions. [2023-11-12 01:03:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:03:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2023-11-12 01:03:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:13,277 INFO L225 Difference]: With dead ends: 184 [2023-11-12 01:03:13,278 INFO L226 Difference]: Without dead ends: 106 [2023-11-12 01:03:13,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:03:13,279 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:13,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-12 01:03:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-12 01:03:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1047619047619048) internal successors, (116), 105 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2023-11-12 01:03:13,283 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 45 [2023-11-12 01:03:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:13,283 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2023-11-12 01:03:13,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 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 01:03:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2023-11-12 01:03:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-12 01:03:13,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:13,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:03:13,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1228510201, now seen corresponding path program 1 times [2023-11-12 01:03:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957682373] [2023-11-12 01:03:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:13,423 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 01:03:13,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:13,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957682373] [2023-11-12 01:03:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957682373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 01:03:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009779621] [2023-11-12 01:03:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 01:03:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 01:03:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:13,426 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 01:03:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:13,540 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2023-11-12 01:03:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 01:03:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 49 [2023-11-12 01:03:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:13,542 INFO L225 Difference]: With dead ends: 139 [2023-11-12 01:03:13,542 INFO L226 Difference]: Without dead ends: 86 [2023-11-12 01:03:13,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:03:13,543 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:13,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-12 01:03:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-12 01:03:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 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 01:03:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2023-11-12 01:03:13,546 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 49 [2023-11-12 01:03:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:13,546 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2023-11-12 01:03:13,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 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 01:03:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2023-11-12 01:03:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 01:03:13,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:13,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:13,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 01:03:13,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:13,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1574835712, now seen corresponding path program 1 times [2023-11-12 01:03:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:13,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341312486] [2023-11-12 01:03:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 01:03:13,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:13,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341312486] [2023-11-12 01:03:13,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341312486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:13,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:13,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 01:03:13,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582162551] [2023-11-12 01:03:13,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:13,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 01:03:13,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 01:03:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:03:13,698 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 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 01:03:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:13,803 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2023-11-12 01:03:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 01:03:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 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 53 [2023-11-12 01:03:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:13,804 INFO L225 Difference]: With dead ends: 111 [2023-11-12 01:03:13,804 INFO L226 Difference]: Without dead ends: 74 [2023-11-12 01:03:13,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:03:13,805 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:13,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-12 01:03:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-12 01:03:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.082191780821918) internal successors, (79), 73 states have internal predecessors, (79), 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 01:03:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2023-11-12 01:03:13,808 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 53 [2023-11-12 01:03:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:13,809 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2023-11-12 01:03:13,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 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 01:03:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2023-11-12 01:03:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 01:03:13,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:13,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:13,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 01:03:13,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:13,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1158118800, now seen corresponding path program 1 times [2023-11-12 01:03:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341570913] [2023-11-12 01:03:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 01:03:13,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:13,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341570913] [2023-11-12 01:03:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341570913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 01:03:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122494875] [2023-11-12 01:03:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 01:03:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 01:03:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-11-12 01:03:13,986 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 01:03:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:14,070 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2023-11-12 01:03:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 01:03:14,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-12 01:03:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:14,072 INFO L225 Difference]: With dead ends: 99 [2023-11-12 01:03:14,072 INFO L226 Difference]: Without dead ends: 70 [2023-11-12 01:03:14,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-11-12 01:03:14,073 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:14,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-12 01:03:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-12 01:03:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 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 01:03:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-11-12 01:03:14,076 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 57 [2023-11-12 01:03:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:14,077 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-11-12 01:03:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 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 01:03:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-11-12 01:03:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 01:03:14,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:14,078 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:14,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 01:03:14,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2057261079, now seen corresponding path program 1 times [2023-11-12 01:03:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313845209] [2023-11-12 01:03:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 01:03:14,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313845209] [2023-11-12 01:03:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313845209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 01:03:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629652585] [2023-11-12 01:03:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 01:03:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 01:03:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 01:03:14,274 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 01:03:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:14,379 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2023-11-12 01:03:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 01:03:14,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 61 [2023-11-12 01:03:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:14,381 INFO L225 Difference]: With dead ends: 103 [2023-11-12 01:03:14,381 INFO L226 Difference]: Without dead ends: 74 [2023-11-12 01:03:14,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 01:03:14,382 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:14,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-12 01:03:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2023-11-12 01:03:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2023-11-12 01:03:14,386 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 61 [2023-11-12 01:03:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:14,387 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2023-11-12 01:03:14,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 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 01:03:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2023-11-12 01:03:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 01:03:14,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:14,388 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 01:03:14,389 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:14,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash -340416772, now seen corresponding path program 1 times [2023-11-12 01:03:14,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425712146] [2023-11-12 01:03:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 01:03:14,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425712146] [2023-11-12 01:03:14,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425712146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:14,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080825350] [2023-11-12 01:03:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:14,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:14,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:14,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:14,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:03:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:14,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 01:03:14,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 01:03:14,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 01:03:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080825350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [170507095] [2023-11-12 01:03:15,192 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:15,192 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:15,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:15,201 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:15,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:16,187 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:16,996 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5455#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:16,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:16,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:16,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-12 01:03:16,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489871029] [2023-11-12 01:03:16,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:16,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 01:03:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 01:03:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=1139, Unknown=0, NotChecked=0, Total=1640 [2023-11-12 01:03:17,000 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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 01:03:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:17,196 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2023-11-12 01:03:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 01:03:17,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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 65 [2023-11-12 01:03:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:17,197 INFO L225 Difference]: With dead ends: 149 [2023-11-12 01:03:17,197 INFO L226 Difference]: Without dead ends: 120 [2023-11-12 01:03:17,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=501, Invalid=1139, Unknown=0, NotChecked=0, Total=1640 [2023-11-12 01:03:17,199 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:17,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 21 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-12 01:03:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-12 01:03:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 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 01:03:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2023-11-12 01:03:17,203 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 65 [2023-11-12 01:03:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:17,203 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2023-11-12 01:03:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 24 states have internal predecessors, (98), 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 01:03:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2023-11-12 01:03:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 01:03:17,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:17,205 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:17,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:17,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 01:03:17,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:17,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1732830904, now seen corresponding path program 2 times [2023-11-12 01:03:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:17,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753868239] [2023-11-12 01:03:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:17,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 84 proven. 338 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 01:03:18,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753868239] [2023-11-12 01:03:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753868239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:18,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053443288] [2023-11-12 01:03:18,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:03:18,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:18,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:18,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:03:18,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 01:03:18,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:18,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:18,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-12 01:03:18,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-12 01:03:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053443288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1074805197] [2023-11-12 01:03:18,753 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:18,753 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:18,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:18,755 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:18,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:19,328 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:20,178 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6445#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:20,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:20,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:20,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 4, 4] total 32 [2023-11-12 01:03:20,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193490160] [2023-11-12 01:03:20,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-12 01:03:20,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-12 01:03:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2023-11-12 01:03:20,182 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 33 states, 33 states have (on average 6.848484848484849) internal successors, (226), 32 states have internal predecessors, (226), 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 01:03:21,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:21,002 INFO L93 Difference]: Finished difference Result 195 states and 213 transitions. [2023-11-12 01:03:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-12 01:03:21,002 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.848484848484849) internal successors, (226), 32 states have internal predecessors, (226), 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 113 [2023-11-12 01:03:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:21,004 INFO L225 Difference]: With dead ends: 195 [2023-11-12 01:03:21,004 INFO L226 Difference]: Without dead ends: 166 [2023-11-12 01:03:21,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1563, Invalid=3549, Unknown=0, NotChecked=0, Total=5112 [2023-11-12 01:03:21,023 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:21,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 66 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-12 01:03:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2023-11-12 01:03:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0613496932515338) internal successors, (173), 163 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2023-11-12 01:03:21,028 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 113 [2023-11-12 01:03:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:21,028 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2023-11-12 01:03:21,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.848484848484849) internal successors, (226), 32 states have internal predecessors, (226), 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 01:03:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2023-11-12 01:03:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 01:03:21,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:21,031 INFO L195 NwaCegarLoop]: trace histogram [23, 14, 14, 14, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:21,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 01:03:21,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:21,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -299871005, now seen corresponding path program 3 times [2023-11-12 01:03:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772073789] [2023-11-12 01:03:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 240 proven. 392 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:22,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772073789] [2023-11-12 01:03:22,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772073789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143806451] [2023-11-12 01:03:22,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 01:03:22,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:22,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:22,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 01:03:22,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 01:03:22,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:22,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 01:03:22,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 240 proven. 392 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:22,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 240 proven. 392 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143806451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [895899763] [2023-11-12 01:03:23,454 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:23,454 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:23,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:23,455 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:23,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:23,931 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:24,748 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7793#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:24,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:24,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2023-11-12 01:03:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748596073] [2023-11-12 01:03:24,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:24,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-12 01:03:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-12 01:03:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1710, Invalid=2712, Unknown=0, NotChecked=0, Total=4422 [2023-11-12 01:03:24,754 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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 01:03:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:25,108 INFO L93 Difference]: Finished difference Result 333 states and 375 transitions. [2023-11-12 01:03:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-12 01:03:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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 147 [2023-11-12 01:03:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:25,110 INFO L225 Difference]: With dead ends: 333 [2023-11-12 01:03:25,110 INFO L226 Difference]: Without dead ends: 264 [2023-11-12 01:03:25,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1710, Invalid=2712, Unknown=0, NotChecked=0, Total=4422 [2023-11-12 01:03:25,114 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:25,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 18 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:03:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-12 01:03:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-12 01:03:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.038022813688213) internal successors, (273), 263 states have internal predecessors, (273), 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 01:03:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 273 transitions. [2023-11-12 01:03:25,121 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 273 transitions. Word has length 147 [2023-11-12 01:03:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:25,122 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 273 transitions. [2023-11-12 01:03:25,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9607843137254903) internal successors, (202), 50 states have internal predecessors, (202), 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 01:03:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 273 transitions. [2023-11-12 01:03:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-12 01:03:25,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:25,127 INFO L195 NwaCegarLoop]: trace histogram [48, 39, 39, 39, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:25,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:25,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:25,334 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:25,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 774571904, now seen corresponding path program 4 times [2023-11-12 01:03:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581398535] [2023-11-12 01:03:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 640 proven. 3042 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:27,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581398535] [2023-11-12 01:03:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581398535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:27,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963784173] [2023-11-12 01:03:27,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 01:03:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:27,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:27,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 01:03:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:27,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-12 01:03:27,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 640 proven. 3042 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:28,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 640 proven. 3042 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-12 01:03:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963784173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1161333957] [2023-11-12 01:03:29,777 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:29,777 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:29,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:29,778 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:29,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:30,216 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:31,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9935#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:31,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:31,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2023-11-12 01:03:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458902764] [2023-11-12 01:03:31,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-12 01:03:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-12 01:03:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1831, Invalid=2861, Unknown=0, NotChecked=0, Total=4692 [2023-11-12 01:03:31,131 INFO L87 Difference]: Start difference. First operand 264 states and 273 transitions. Second operand has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 52 states have internal predecessors, (249), 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 01:03:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:31,480 INFO L93 Difference]: Finished difference Result 341 states and 360 transitions. [2023-11-12 01:03:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-12 01:03:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 52 states have internal predecessors, (249), 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 247 [2023-11-12 01:03:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:31,484 INFO L225 Difference]: With dead ends: 341 [2023-11-12 01:03:31,484 INFO L226 Difference]: Without dead ends: 272 [2023-11-12 01:03:31,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 674 SyntacticMatches, 48 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2682 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1831, Invalid=2861, Unknown=0, NotChecked=0, Total=4692 [2023-11-12 01:03:31,487 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:31,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:03:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-12 01:03:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-11-12 01:03:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.03690036900369) internal successors, (281), 271 states have internal predecessors, (281), 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 01:03:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 281 transitions. [2023-11-12 01:03:31,494 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 281 transitions. Word has length 247 [2023-11-12 01:03:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:31,495 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 281 transitions. [2023-11-12 01:03:31,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.69811320754717) internal successors, (249), 52 states have internal predecessors, (249), 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 01:03:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 281 transitions. [2023-11-12 01:03:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-12 01:03:31,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:31,499 INFO L195 NwaCegarLoop]: trace histogram [50, 41, 41, 41, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:31,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:31,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:31,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash -233272758, now seen corresponding path program 5 times [2023-11-12 01:03:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62470378] [2023-11-12 01:03:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:32,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62470378] [2023-11-12 01:03:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62470378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524716351] [2023-11-12 01:03:32,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:03:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:32,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:32,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 01:03:32,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-12 01:03:32,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:32,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 01:03:32,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:32,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524716351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1618512376] [2023-11-12 01:03:33,008 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:33,008 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:33,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:33,009 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:33,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:33,444 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:34,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12108#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:34,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:34,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:34,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-12 01:03:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550679375] [2023-11-12 01:03:34,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-12 01:03:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-12 01:03:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=852, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 01:03:34,122 INFO L87 Difference]: Start difference. First operand 272 states and 281 transitions. Second operand has 20 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 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 01:03:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,184 INFO L93 Difference]: Finished difference Result 353 states and 381 transitions. [2023-11-12 01:03:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 01:03:34,185 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 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 255 [2023-11-12 01:03:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,187 INFO L225 Difference]: With dead ends: 353 [2023-11-12 01:03:34,187 INFO L226 Difference]: Without dead ends: 352 [2023-11-12 01:03:34,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=852, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 01:03:34,189 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 111 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 170 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-12 01:03:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-11-12 01:03:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.056980056980057) internal successors, (371), 351 states have internal predecessors, (371), 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 01:03:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 371 transitions. [2023-11-12 01:03:34,198 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 371 transitions. Word has length 255 [2023-11-12 01:03:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,199 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 371 transitions. [2023-11-12 01:03:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 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 01:03:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 371 transitions. [2023-11-12 01:03:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-12 01:03:34,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,205 INFO L195 NwaCegarLoop]: trace histogram [60, 41, 41, 41, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:34,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:34,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1317174826, now seen corresponding path program 6 times [2023-11-12 01:03:34,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:34,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483094736] [2023-11-12 01:03:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5864 backedges. 0 proven. 2502 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:35,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:35,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483094736] [2023-11-12 01:03:35,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483094736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:35,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407110148] [2023-11-12 01:03:35,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 01:03:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:35,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:35,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 01:03:35,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 01:03:35,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:35,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 01:03:35,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5864 backedges. 0 proven. 2502 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:35,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5864 backedges. 0 proven. 2502 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407110148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1069111145] [2023-11-12 01:03:36,618 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:36,619 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:36,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:36,621 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:36,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:37,041 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:37,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14753#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:37,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:37,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-11-12 01:03:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786944452] [2023-11-12 01:03:37,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:37,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-12 01:03:37,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:37,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-12 01:03:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1198, Invalid=1882, Unknown=0, NotChecked=0, Total=3080 [2023-11-12 01:03:37,813 INFO L87 Difference]: Start difference. First operand 352 states and 371 transitions. Second operand has 40 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 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 01:03:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:38,012 INFO L93 Difference]: Finished difference Result 513 states and 571 transitions. [2023-11-12 01:03:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-12 01:03:38,013 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 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 315 [2023-11-12 01:03:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:38,016 INFO L225 Difference]: With dead ends: 513 [2023-11-12 01:03:38,016 INFO L226 Difference]: Without dead ends: 512 [2023-11-12 01:03:38,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1198, Invalid=1882, Unknown=0, NotChecked=0, Total=3080 [2023-11-12 01:03:38,019 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 255 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 310 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-12 01:03:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2023-11-12 01:03:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.0782778864970646) internal successors, (551), 511 states have internal predecessors, (551), 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 01:03:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 551 transitions. [2023-11-12 01:03:38,032 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 551 transitions. Word has length 315 [2023-11-12 01:03:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:38,033 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 551 transitions. [2023-11-12 01:03:38,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 7.897435897435898) internal successors, (308), 39 states have internal predecessors, (308), 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 01:03:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 551 transitions. [2023-11-12 01:03:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-12 01:03:38,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:38,042 INFO L195 NwaCegarLoop]: trace histogram [80, 41, 41, 41, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:38,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:38,249 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:38,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -902282514, now seen corresponding path program 7 times [2023-11-12 01:03:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:38,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863041005] [2023-11-12 01:03:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10924 backedges. 0 proven. 7562 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:40,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863041005] [2023-11-12 01:03:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863041005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460413996] [2023-11-12 01:03:40,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 01:03:40,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:40,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:40,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 01:03:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:40,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-12 01:03:40,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10924 backedges. 0 proven. 7562 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:41,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:03:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10924 backedges. 0 proven. 7562 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460413996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:03:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1141188605] [2023-11-12 01:03:43,448 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-12 01:03:43,448 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:03:43,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:03:43,449 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:03:43,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:03:43,827 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:03:44,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18478#(and (<= |ULTIMATE.start_main_~main__x~0#1| 100) (= ~__return_720~0 0) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~main__y~0#1|) (<= 51 |ULTIMATE.start_main_~main__x~0#1|) (= ~__return_main~0 0))' at error location [2023-11-12 01:03:44,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:03:44,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:03:44,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 78 [2023-11-12 01:03:44,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267792025] [2023-11-12 01:03:44,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 01:03:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-12 01:03:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:03:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-12 01:03:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3978, Invalid=5142, Unknown=0, NotChecked=0, Total=9120 [2023-11-12 01:03:44,590 INFO L87 Difference]: Start difference. First operand 512 states and 551 transitions. Second operand has 80 states, 79 states have (on average 6.936708860759493) internal successors, (548), 79 states have internal predecessors, (548), 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 01:03:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:45,653 INFO L93 Difference]: Finished difference Result 833 states and 951 transitions. [2023-11-12 01:03:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-12 01:03:45,654 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 6.936708860759493) internal successors, (548), 79 states have internal predecessors, (548), 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 435 [2023-11-12 01:03:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:45,659 INFO L225 Difference]: With dead ends: 833 [2023-11-12 01:03:45,660 INFO L226 Difference]: Without dead ends: 832 [2023-11-12 01:03:45,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1248 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3978, Invalid=5142, Unknown=0, NotChecked=0, Total=9120 [2023-11-12 01:03:45,664 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 696 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 590 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:03:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-12 01:03:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-11-12 01:03:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.0962695547533092) internal successors, (911), 831 states have internal predecessors, (911), 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 01:03:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 911 transitions. [2023-11-12 01:03:45,683 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 911 transitions. Word has length 435 [2023-11-12 01:03:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:45,684 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 911 transitions. [2023-11-12 01:03:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 6.936708860759493) internal successors, (548), 79 states have internal predecessors, (548), 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 01:03:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 911 transitions. [2023-11-12 01:03:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-11-12 01:03:45,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:45,705 INFO L195 NwaCegarLoop]: trace histogram [120, 79, 79, 79, 79, 78, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:45,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:45,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:45,915 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-12 01:03:45,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1362817762, now seen corresponding path program 8 times [2023-11-12 01:03:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:03:45,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131196635] [2023-11-12 01:03:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:03:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 28244 backedges. 0 proven. 24882 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-11-12 01:03:52,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:03:52,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131196635] [2023-11-12 01:03:52,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131196635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:03:52,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095788639] [2023-11-12 01:03:52,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:03:52,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:03:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:52,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:03:52,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e02cfbb-7341-4d66-b19a-ae70ffd3d88d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 01:03:52,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2023-11-12 01:03:52,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:03:52,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-12 01:03:52,834 INFO L285 TraceCheckSpWp]: Computing forward predicates...