./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/java_BubbleSort-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/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_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/java_BubbleSort-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a88178fc87721f9fcc743f79bc2a47ff45a89438b0709780ae0f715015934520 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:13,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:13,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:10:13,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:13,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:13,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:13,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:13,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:13,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:13,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:13,562 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:13,564 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:13,564 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:13,567 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:13,567 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:13,568 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:13,569 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:13,569 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:13,570 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:13,571 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:13,572 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:13,572 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:13,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:13,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:10:13,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:13,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:13,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:10:13,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:13,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:10:13,578 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:10:13,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:10:13,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:10:13,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:13,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:13,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:13,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:13,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:13,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:13,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:10:13,584 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:13,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:13,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:10:13,585 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:13,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:13,587 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_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a88178fc87721f9fcc743f79bc2a47ff45a89438b0709780ae0f715015934520 [2023-11-12 00:10:13,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:14,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:14,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:14,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:14,017 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:14,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/termination-memory-alloca/java_BubbleSort-alloca-2.i [2023-11-12 00:10:17,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:17,678 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:17,679 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/sv-benchmarks/c/termination-memory-alloca/java_BubbleSort-alloca-2.i [2023-11-12 00:10:17,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/data/714225b57/67fbcf95980e4aeeb7c41c6ff2880519/FLAGefc4b44f9 [2023-11-12 00:10:17,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/data/714225b57/67fbcf95980e4aeeb7c41c6ff2880519 [2023-11-12 00:10:17,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:17,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:17,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:17,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:17,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:17,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:17" (1/1) ... [2023-11-12 00:10:17,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f25c7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:17, skipping insertion in model container [2023-11-12 00:10:17,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:17" (1/1) ... [2023-11-12 00:10:17,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:18,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:18,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:18,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:18,225 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:10:18,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18 WrapperNode [2023-11-12 00:10:18,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:18,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:18,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:10:18,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:10:18,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,269 INFO L138 Inliner]: procedures = 111, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-11-12 00:10:18,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:18,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:10:18,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:10:18,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:10:18,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:10:18,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:10:18,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:10:18,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:10:18,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (1/1) ... [2023-11-12 00:10:18,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:18,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:18,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:10:18,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:10:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:10:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:10:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:10:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:10:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:10:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:10:18,507 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:10:18,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:10:18,684 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:10:18,755 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:10:18,761 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:10:18,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:18 BoogieIcfgContainer [2023-11-12 00:10:18,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:10:18,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:10:18,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:10:18,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:10:18,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:10:17" (1/3) ... [2023-11-12 00:10:18,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2197c99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:18, skipping insertion in model container [2023-11-12 00:10:18,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:18" (2/3) ... [2023-11-12 00:10:18,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2197c99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:18, skipping insertion in model container [2023-11-12 00:10:18,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:18" (3/3) ... [2023-11-12 00:10:18,774 INFO L112 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca-2.i [2023-11-12 00:10:18,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:10:18,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-12 00:10:18,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:10:18,850 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;@6b85af4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:10:18,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-12 00:10:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:10:18,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:18,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:10:18,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:18,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash 124826, now seen corresponding path program 1 times [2023-11-12 00:10:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989423053] [2023-11-12 00:10:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:19,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:19,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989423053] [2023-11-12 00:10:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989423053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124533905] [2023-11-12 00:10:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:19,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:19,225 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:19,287 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2023-11-12 00:10:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:10:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:19,299 INFO L225 Difference]: With dead ends: 66 [2023-11-12 00:10:19,299 INFO L226 Difference]: Without dead ends: 34 [2023-11-12 00:10:19,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:19,306 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-12 00:10:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-12 00:10:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 33 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 00:10:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-11-12 00:10:19,344 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 3 [2023-11-12 00:10:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:19,345 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-11-12 00:10:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-11-12 00:10:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:10:19,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:19,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:10:19,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:10:19,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:19,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash 3869659, now seen corresponding path program 1 times [2023-11-12 00:10:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211411123] [2023-11-12 00:10:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:19,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:19,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211411123] [2023-11-12 00:10:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211411123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:19,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256167179] [2023-11-12 00:10:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:19,428 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:19,470 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-11-12 00:10:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:10:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:19,472 INFO L225 Difference]: With dead ends: 38 [2023-11-12 00:10:19,472 INFO L226 Difference]: Without dead ends: 37 [2023-11-12 00:10:19,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:19,475 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:19,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 96 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-12 00:10:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-12 00:10:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 36 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 00:10:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-11-12 00:10:19,484 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 4 [2023-11-12 00:10:19,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:19,484 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-11-12 00:10:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-11-12 00:10:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:10:19,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:19,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:10:19,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:10:19,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:19,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:19,487 INFO L85 PathProgramCache]: Analyzing trace with hash 3873954, now seen corresponding path program 1 times [2023-11-12 00:10:19,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:19,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107348400] [2023-11-12 00:10:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:19,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:19,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107348400] [2023-11-12 00:10:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107348400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:19,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:19,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508045894] [2023-11-12 00:10:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:19,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:19,550 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:19,578 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-11-12 00:10:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:19,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:10:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:19,580 INFO L225 Difference]: With dead ends: 37 [2023-11-12 00:10:19,580 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:10:19,580 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 00:10:19,582 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:19,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:19,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:10:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-12 00:10:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-11-12 00:10:19,590 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 4 [2023-11-12 00:10:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:19,591 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-11-12 00:10:19,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,591 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-11-12 00:10:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:10:19,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:19,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:10:19,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:10:19,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:19,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:19,593 INFO L85 PathProgramCache]: Analyzing trace with hash 120092646, now seen corresponding path program 1 times [2023-11-12 00:10:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111787694] [2023-11-12 00:10:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:19,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111787694] [2023-11-12 00:10:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111787694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:19,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954529250] [2023-11-12 00:10:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:19,710 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:19,750 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2023-11-12 00:10:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:19,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:10:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:19,751 INFO L225 Difference]: With dead ends: 65 [2023-11-12 00:10:19,752 INFO L226 Difference]: Without dead ends: 36 [2023-11-12 00:10:19,752 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 00:10:19,754 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:19,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 90 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-12 00:10:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-12 00:10:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.625) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-11-12 00:10:19,761 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 5 [2023-11-12 00:10:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:19,761 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-11-12 00:10:19,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-11-12 00:10:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:10:19,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:19,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-12 00:10:19,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:10:19,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:19,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -682989730, now seen corresponding path program 1 times [2023-11-12 00:10:19,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678127232] [2023-11-12 00:10:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:19,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678127232] [2023-11-12 00:10:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678127232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646824834] [2023-11-12 00:10:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:19,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:19,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:19,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:10:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:20,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:10:20,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:20,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:20,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646824834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1117220598] [2023-11-12 00:10:20,227 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-11-12 00:10:20,227 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:20,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:20,238 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:20,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:21,199 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:21,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '488#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 2 |ULTIMATE.start_main_~numbers~0#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (= |ULTIMATE.start_main_#t~malloc9#1.offset| 0) (= |ULTIMATE.start_main_~numbers~0#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post10#1|) (<= 1 |ULTIMATE.start_main_~array_size~0#1|))' at error location [2023-11-12 00:10:21,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:21,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-12 00:10:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213451598] [2023-11-12 00:10:21,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:10:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:10:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:10:21,360 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:21,479 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2023-11-12 00:10:21,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:10:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:10:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:21,482 INFO L225 Difference]: With dead ends: 46 [2023-11-12 00:10:21,483 INFO L226 Difference]: Without dead ends: 45 [2023-11-12 00:10:21,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:10:21,485 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:21,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 214 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-12 00:10:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-12 00:10:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-11-12 00:10:21,504 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 7 [2023-11-12 00:10:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:21,505 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-11-12 00:10:21,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-11-12 00:10:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:10:21,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:21,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:21,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:21,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:21,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 302288067, now seen corresponding path program 1 times [2023-11-12 00:10:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375980266] [2023-11-12 00:10:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:21,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:21,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:21,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375980266] [2023-11-12 00:10:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375980266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620744812] [2023-11-12 00:10:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:21,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:21,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:21,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:21,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:10:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:21,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:10:21,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:21,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620744812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1523460839] [2023-11-12 00:10:22,063 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:10:22,064 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:22,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:22,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:22,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:23,068 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1523460839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 13 [2023-11-12 00:10:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228759927] [2023-11-12 00:10:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:23,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:10:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:10:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:23,772 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:24,072 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2023-11-12 00:10:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:10:24,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:10:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:24,074 INFO L225 Difference]: With dead ends: 115 [2023-11-12 00:10:24,074 INFO L226 Difference]: Without dead ends: 87 [2023-11-12 00:10:24,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:10:24,075 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:24,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 73 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-12 00:10:24,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2023-11-12 00:10:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 68 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2023-11-12 00:10:24,100 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 8 [2023-11-12 00:10:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:24,100 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2023-11-12 00:10:24,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2023-11-12 00:10:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:10:24,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:24,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:24,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:24,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:24,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:24,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:24,313 INFO L85 PathProgramCache]: Analyzing trace with hash 984569364, now seen corresponding path program 1 times [2023-11-12 00:10:24,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712893442] [2023-11-12 00:10:24,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:10:24,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712893442] [2023-11-12 00:10:24,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712893442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:24,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:24,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925980418] [2023-11-12 00:10:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:24,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:24,380 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 00:10:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:24,462 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2023-11-12 00:10:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:24,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 00:10:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:24,466 INFO L225 Difference]: With dead ends: 100 [2023-11-12 00:10:24,467 INFO L226 Difference]: Without dead ends: 92 [2023-11-12 00:10:24,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:24,469 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:24,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-12 00:10:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2023-11-12 00:10:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 84 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2023-11-12 00:10:24,492 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 14 [2023-11-12 00:10:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:24,492 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2023-11-12 00:10:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 00:10:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2023-11-12 00:10:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:10:24,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:24,493 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1] [2023-11-12 00:10:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:10:24,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1522535963, now seen corresponding path program 2 times [2023-11-12 00:10:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981314585] [2023-11-12 00:10:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:24,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981314585] [2023-11-12 00:10:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981314585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414344715] [2023-11-12 00:10:24,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:10:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:24,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:24,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:10:24,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:10:24,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:10:24,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:10:24,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 00:10:24,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-12 00:10:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414344715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424755806] [2023-11-12 00:10:24,912 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-11-12 00:10:24,912 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:24,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:24,914 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:24,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:25,297 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:25,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1188#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 2 |ULTIMATE.start_main_~numbers~0#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc9#1.base|) (= |ULTIMATE.start_main_#t~malloc9#1.offset| 0) (= |ULTIMATE.start_main_~numbers~0#1.offset| 0) (<= 2147483647 |ULTIMATE.start_main_#t~post10#1|) (<= 1 |ULTIMATE.start_main_~array_size~0#1|))' at error location [2023-11-12 00:10:25,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:25,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:25,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-12 00:10:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263806926] [2023-11-12 00:10:25,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:25,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:10:25,822 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:26,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:26,106 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2023-11-12 00:10:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:10:26,108 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:10:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:26,109 INFO L225 Difference]: With dead ends: 88 [2023-11-12 00:10:26,109 INFO L226 Difference]: Without dead ends: 87 [2023-11-12 00:10:26,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2023-11-12 00:10:26,111 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 53 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:26,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 120 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-12 00:10:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2023-11-12 00:10:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2023-11-12 00:10:26,120 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 16 [2023-11-12 00:10:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:26,120 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2023-11-12 00:10:26,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2023-11-12 00:10:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:10:26,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:26,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:26,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:26,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:26,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:26,329 INFO L85 PathProgramCache]: Analyzing trace with hash 54095540, now seen corresponding path program 1 times [2023-11-12 00:10:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:26,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061071329] [2023-11-12 00:10:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:10:26,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061071329] [2023-11-12 00:10:26,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061071329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386320282] [2023-11-12 00:10:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:26,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:26,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:26,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:10:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:26,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:10:26,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:26,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386320282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1511784547] [2023-11-12 00:10:26,582 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-12 00:10:26,583 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:26,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:26,584 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:26,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:27,527 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1511784547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:28,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 5, 5] total 18 [2023-11-12 00:10:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289118675] [2023-11-12 00:10:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:10:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:10:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:10:28,863 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:29,545 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2023-11-12 00:10:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:10:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-12 00:10:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:29,546 INFO L225 Difference]: With dead ends: 86 [2023-11-12 00:10:29,546 INFO L226 Difference]: Without dead ends: 81 [2023-11-12 00:10:29,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:10:29,548 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:29,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 62 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:29,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-12 00:10:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2023-11-12 00:10:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2023-11-12 00:10:29,559 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 19 [2023-11-12 00:10:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:29,560 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2023-11-12 00:10:29,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2023-11-12 00:10:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:10:29,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:29,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:29,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:29,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:29,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:29,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1676960699, now seen corresponding path program 1 times [2023-11-12 00:10:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256575790] [2023-11-12 00:10:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:29,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256575790] [2023-11-12 00:10:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256575790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:29,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676174767] [2023-11-12 00:10:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:29,831 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:29,869 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2023-11-12 00:10:29,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:29,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-12 00:10:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:29,871 INFO L225 Difference]: With dead ends: 73 [2023-11-12 00:10:29,872 INFO L226 Difference]: Without dead ends: 72 [2023-11-12 00:10:29,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:29,873 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:29,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-12 00:10:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-12 00:10:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-11-12 00:10:29,885 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 20 [2023-11-12 00:10:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:29,885 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-11-12 00:10:29,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-11-12 00:10:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 00:10:29,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:29,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:10:29,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:29,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 446174225, now seen corresponding path program 1 times [2023-11-12 00:10:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421092101] [2023-11-12 00:10:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:29,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421092101] [2023-11-12 00:10:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421092101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:29,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:29,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952934056] [2023-11-12 00:10:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:29,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:29,961 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:30,011 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2023-11-12 00:10:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 00:10:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:30,013 INFO L225 Difference]: With dead ends: 79 [2023-11-12 00:10:30,014 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 00:10:30,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:30,015 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:30,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 68 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 00:10:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2023-11-12 00:10:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 74 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2023-11-12 00:10:30,034 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 21 [2023-11-12 00:10:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:30,035 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2023-11-12 00:10:30,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2023-11-12 00:10:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:10:30,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:30,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:30,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 00:10:30,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:30,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash -689894183, now seen corresponding path program 1 times [2023-11-12 00:10:30,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392738245] [2023-11-12 00:10:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:10:30,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392738245] [2023-11-12 00:10:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392738245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989383935] [2023-11-12 00:10:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:30,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:30,084 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:30,123 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2023-11-12 00:10:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:30,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-12 00:10:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:30,125 INFO L225 Difference]: With dead ends: 81 [2023-11-12 00:10:30,125 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 00:10:30,125 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 00:10:30,126 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:30,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 00:10:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2023-11-12 00:10:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2023-11-12 00:10:30,134 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 23 [2023-11-12 00:10:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:30,134 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2023-11-12 00:10:30,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2023-11-12 00:10:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:10:30,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:30,136 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:30,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 00:10:30,136 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:30,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:30,137 INFO L85 PathProgramCache]: Analyzing trace with hash -947379438, now seen corresponding path program 1 times [2023-11-12 00:10:30,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:30,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364063844] [2023-11-12 00:10:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:10:30,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364063844] [2023-11-12 00:10:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364063844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132036398] [2023-11-12 00:10:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:30,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:30,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:30,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:10:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:30,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:10:30,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:10:30,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:10:30,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132036398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:30,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775110355] [2023-11-12 00:10:30,357 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-12 00:10:30,357 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:30,358 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:30,358 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:30,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:41,008 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 4 iterations. Over-approximation may be very coarse. [2023-11-12 00:10:41,413 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:42,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2367#(and (<= |ULTIMATE.start_sort_~i~0#1| 2147483647) (<= (+ |ULTIMATE.start_sort_~pass~0#1| 2147483648) |ULTIMATE.start_sort_~n#1|) (<= 0 (+ |ULTIMATE.start_sort_~pass~0#1| 2147483648)) (<= 0 |ULTIMATE.start_sort_~i~0#1|) (<= |ULTIMATE.start_sort_~pass~0#1| 2147483647))' at error location [2023-11-12 00:10:42,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:42,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:42,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-11-12 00:10:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443863975] [2023-11-12 00:10:42,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:42,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:10:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:10:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:10:42,089 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:42,157 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2023-11-12 00:10:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:10:42,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-12 00:10:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:42,159 INFO L225 Difference]: With dead ends: 146 [2023-11-12 00:10:42,159 INFO L226 Difference]: Without dead ends: 78 [2023-11-12 00:10:42,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:10:42,160 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:42,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-12 00:10:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-11-12 00:10:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 75 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2023-11-12 00:10:42,169 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 24 [2023-11-12 00:10:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:42,170 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2023-11-12 00:10:42,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2023-11-12 00:10:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:10:42,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:42,171 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 00:10:42,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:42,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1386323733, now seen corresponding path program 2 times [2023-11-12 00:10:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:42,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671630344] [2023-11-12 00:10:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:42,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:10:42,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:42,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671630344] [2023-11-12 00:10:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671630344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941113312] [2023-11-12 00:10:42,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:10:42,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:42,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:42,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:10:42,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:10:42,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:10:42,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:10:42,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 00:10:42,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:10:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941113312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:10:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2023-11-12 00:10:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977323766] [2023-11-12 00:10:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:10:42,644 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:42,720 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2023-11-12 00:10:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:10:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 00:10:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:42,722 INFO L225 Difference]: With dead ends: 77 [2023-11-12 00:10:42,722 INFO L226 Difference]: Without dead ends: 76 [2023-11-12 00:10:42,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:10:42,723 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:42,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 79 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-12 00:10:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2023-11-12 00:10:42,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2023-11-12 00:10:42,731 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 27 [2023-11-12 00:10:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:42,731 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2023-11-12 00:10:42,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2023-11-12 00:10:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:10:42,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:42,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 00:10:42,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:42,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:42,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:42,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1872839388, now seen corresponding path program 1 times [2023-11-12 00:10:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418250301] [2023-11-12 00:10:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 00:10:42,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418250301] [2023-11-12 00:10:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418250301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:42,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:42,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112079102] [2023-11-12 00:10:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:42,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:42,984 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:43,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:43,043 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-12 00:10:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:43,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 00:10:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:43,045 INFO L225 Difference]: With dead ends: 80 [2023-11-12 00:10:43,045 INFO L226 Difference]: Without dead ends: 79 [2023-11-12 00:10:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:43,045 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:43,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-12 00:10:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2023-11-12 00:10:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 62 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2023-11-12 00:10:43,053 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 27 [2023-11-12 00:10:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:43,054 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2023-11-12 00:10:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2023-11-12 00:10:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 00:10:43,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:43,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 00:10:43,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:43,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -603604972, now seen corresponding path program 1 times [2023-11-12 00:10:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213333357] [2023-11-12 00:10:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:10:43,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213333357] [2023-11-12 00:10:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213333357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304995148] [2023-11-12 00:10:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:43,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:43,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:10:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:43,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:10:43,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:10:43,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:10:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304995148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25312789] [2023-11-12 00:10:43,487 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-12 00:10:43,487 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:43,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:43,488 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:43,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:52,324 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 4 iterations. Over-approximation may be very coarse. [2023-11-12 00:10:52,582 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:53,381 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3259#(and (<= 2147483647 |ULTIMATE.start_sort_#t~post2#1|) (= |ULTIMATE.start_sort_#t~post2#1| |ULTIMATE.start_sort_~pass~0#1|) (or (and (<= |ULTIMATE.start_sort_~i~0#1| 2147483647) (<= |ULTIMATE.start_sort_~n#1| 2147483648)) (and (<= 1 |ULTIMATE.start_sort_~i~0#1|) (<= |ULTIMATE.start_sort_~i~0#1| 2147483647))))' at error location [2023-11-12 00:10:53,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:53,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 17 [2023-11-12 00:10:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615648816] [2023-11-12 00:10:53,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 00:10:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 00:10:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-11-12 00:10:53,384 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:53,650 INFO L93 Difference]: Finished difference Result 158 states and 177 transitions. [2023-11-12 00:10:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:10:53,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 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 31 [2023-11-12 00:10:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:53,651 INFO L225 Difference]: With dead ends: 158 [2023-11-12 00:10:53,651 INFO L226 Difference]: Without dead ends: 102 [2023-11-12 00:10:53,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2023-11-12 00:10:53,654 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:53,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 247 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-12 00:10:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2023-11-12 00:10:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.247191011235955) internal successors, (111), 94 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2023-11-12 00:10:53,665 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 31 [2023-11-12 00:10:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:53,665 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2023-11-12 00:10:53,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2023-11-12 00:10:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:10:53,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:53,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:53,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:53,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 00:10:53,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:53,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1687687921, now seen corresponding path program 2 times [2023-11-12 00:10:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:53,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659610786] [2023-11-12 00:10:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-12 00:10:53,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659610786] [2023-11-12 00:10:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659610786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401719660] [2023-11-12 00:10:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:10:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:10:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:53,931 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:53,979 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2023-11-12 00:10:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:10:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 00:10:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:53,981 INFO L225 Difference]: With dead ends: 145 [2023-11-12 00:10:53,981 INFO L226 Difference]: Without dead ends: 107 [2023-11-12 00:10:53,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:10:53,982 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:53,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-12 00:10:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2023-11-12 00:10:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2023-11-12 00:10:53,992 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 41 [2023-11-12 00:10:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:53,992 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2023-11-12 00:10:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2023-11-12 00:10:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 00:10:53,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:53,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 00:10:53,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:10:53,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 593940453, now seen corresponding path program 1 times [2023-11-12 00:10:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134359166] [2023-11-12 00:10:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:10:54,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134359166] [2023-11-12 00:10:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134359166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414941887] [2023-11-12 00:10:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:54,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:54,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:10:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:54,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:10:54,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:54,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:10:54,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414941887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072254688] [2023-11-12 00:10:54,480 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-12 00:10:54,480 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:54,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:54,480 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:54,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:02,629 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 4 iterations. Over-approximation may be very coarse. [2023-11-12 00:11:02,914 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1072254688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:11:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 11, 11] total 31 [2023-11-12 00:11:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853738079] [2023-11-12 00:11:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:11:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:11:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2023-11-12 00:11:03,683 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:04,256 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2023-11-12 00:11:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:11:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 00:11:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:04,258 INFO L225 Difference]: With dead ends: 107 [2023-11-12 00:11:04,258 INFO L226 Difference]: Without dead ends: 103 [2023-11-12 00:11:04,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2023-11-12 00:11:04,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:04,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:11:04,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-12 00:11:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2023-11-12 00:11:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-12 00:11:04,269 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 41 [2023-11-12 00:11:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-12 00:11:04,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-12 00:11:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-12 00:11:04,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:04,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:04,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:04,477 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-12 00:11:04,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1232284940, now seen corresponding path program 1 times [2023-11-12 00:11:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452718221] [2023-11-12 00:11:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:11:04,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452718221] [2023-11-12 00:11:04,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452718221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:11:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468600876] [2023-11-12 00:11:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:04,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:04,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:04,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c569de7-34eb-4e4f-975c-ddb0cd7afbb2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:11:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:04,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:11:04,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:11:04,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:11:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468600876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745661724] [2023-11-12 00:11:04,982 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-12 00:11:04,982 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:04,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:04,982 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:04,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:13,338 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 4 iterations. Over-approximation may be very coarse.