./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:42,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:42,693 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:51:42,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:42,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:42,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:42,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:42,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:42,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:42,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:42,739 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:42,740 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:42,741 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:42,742 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:42,742 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:42,743 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:42,744 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:42,745 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:42,746 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:42,746 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:42,747 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:42,748 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:42,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:42,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:42,751 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:51:42,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:42,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:51:42,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:42,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:42,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:42,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:42,755 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:51:42,755 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:42,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:51:42,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:42,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:42,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:42,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:42,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:42,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:42,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:42,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:42,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:42,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:42,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:42,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:42,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:42,761 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:42,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:42,762 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_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2023-11-24 23:51:43,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:43,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:43,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:43,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:43,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:43,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/array-tiling/mbpr3.c [2023-11-24 23:51:46,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:46,975 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:46,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/sv-benchmarks/c/array-tiling/mbpr3.c [2023-11-24 23:51:46,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/data/161970b18/90cc86cab1eb45b8bd7f85128b725d8c/FLAGc12fe2155 [2023-11-24 23:51:47,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/data/161970b18/90cc86cab1eb45b8bd7f85128b725d8c [2023-11-24 23:51:47,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:47,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:47,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:47,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:47,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:47,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b6f1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47, skipping insertion in model container [2023-11-24 23:51:47,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:47,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:47,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:47,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:47,731 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:47,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47 WrapperNode [2023-11-24 23:51:47,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:47,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:47,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:47,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:47,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,799 INFO L138 Inliner]: procedures = 15, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 203 [2023-11-24 23:51:47,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:47,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:47,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:47,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:47,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:47,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:47,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:47,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:47,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (1/1) ... [2023-11-24 23:51:47,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:47,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:47,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:47,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:51:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:51:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:51:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:51:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:51:48,066 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:48,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:48,640 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:48,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:48,703 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 23:51:48,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:48 BoogieIcfgContainer [2023-11-24 23:51:48,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:48,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:48,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:48,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:48,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:47" (1/3) ... [2023-11-24 23:51:48,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52489086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:48, skipping insertion in model container [2023-11-24 23:51:48,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:47" (2/3) ... [2023-11-24 23:51:48,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52489086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:48, skipping insertion in model container [2023-11-24 23:51:48,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:48" (3/3) ... [2023-11-24 23:51:48,715 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2023-11-24 23:51:48,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:48,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2023-11-24 23:51:48,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:48,816 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;@326659e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:48,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-11-24 23:51:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 101 states have (on average 1.9702970297029703) internal successors, (199), 187 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:51:48,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:51:48,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:48,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash 9755752, now seen corresponding path program 1 times [2023-11-24 23:51:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881270865] [2023-11-24 23:51:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:49,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881270865] [2023-11-24 23:51:49,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881270865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:49,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:49,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:49,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030640449] [2023-11-24 23:51:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:49,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:49,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:49,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:49,363 INFO L87 Difference]: Start difference. First operand has 188 states, 101 states have (on average 1.9702970297029703) internal successors, (199), 187 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:49,514 INFO L93 Difference]: Finished difference Result 318 states and 335 transitions. [2023-11-24 23:51:49,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:51:49,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:51:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:49,533 INFO L225 Difference]: With dead ends: 318 [2023-11-24 23:51:49,533 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 23:51:49,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:49,542 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 190 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:49,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 172 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:49,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 23:51:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-24 23:51:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 99 states have (on average 1.898989898989899) internal successors, (188), 181 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 188 transitions. [2023-11-24 23:51:49,593 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 188 transitions. Word has length 4 [2023-11-24 23:51:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:49,594 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 188 transitions. [2023-11-24 23:51:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 188 transitions. [2023-11-24 23:51:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:51:49,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:49,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:51:49,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:51:49,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:49,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash 302428366, now seen corresponding path program 1 times [2023-11-24 23:51:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:49,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824733340] [2023-11-24 23:51:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:49,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:49,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824733340] [2023-11-24 23:51:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824733340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:49,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:49,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603835843] [2023-11-24 23:51:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:51:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:51:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:49,920 INFO L87 Difference]: Start difference. First operand 182 states and 188 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:50,022 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2023-11-24 23:51:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:51:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:51:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:50,028 INFO L225 Difference]: With dead ends: 182 [2023-11-24 23:51:50,028 INFO L226 Difference]: Without dead ends: 179 [2023-11-24 23:51:50,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:51:50,033 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 364 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:50,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 166 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-24 23:51:50,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-24 23:51:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 99 states have (on average 1.8686868686868687) internal successors, (185), 178 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 185 transitions. [2023-11-24 23:51:50,065 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 185 transitions. Word has length 5 [2023-11-24 23:51:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:50,065 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 185 transitions. [2023-11-24 23:51:50,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 185 transitions. [2023-11-24 23:51:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:51:50,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:50,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:51:50,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1197876817, now seen corresponding path program 1 times [2023-11-24 23:51:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636267079] [2023-11-24 23:51:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:50,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636267079] [2023-11-24 23:51:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636267079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:50,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777169336] [2023-11-24 23:51:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:50,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:50,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:50,193 INFO L87 Difference]: Start difference. First operand 179 states and 185 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:50,657 INFO L93 Difference]: Finished difference Result 350 states and 362 transitions. [2023-11-24 23:51:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:51:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:50,666 INFO L225 Difference]: With dead ends: 350 [2023-11-24 23:51:50,666 INFO L226 Difference]: Without dead ends: 278 [2023-11-24 23:51:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:50,677 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 95 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:50,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 128 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:51:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-24 23:51:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2023-11-24 23:51:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 183 states have (on average 1.5027322404371584) internal successors, (275), 262 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 275 transitions. [2023-11-24 23:51:50,724 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 275 transitions. Word has length 8 [2023-11-24 23:51:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:50,724 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 275 transitions. [2023-11-24 23:51:50,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 275 transitions. [2023-11-24 23:51:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:51:50,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:50,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:51:50,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:50,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1772202616, now seen corresponding path program 1 times [2023-11-24 23:51:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640007190] [2023-11-24 23:51:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:50,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640007190] [2023-11-24 23:51:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640007190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:50,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532310746] [2023-11-24 23:51:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:50,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:50,866 INFO L87 Difference]: Start difference. First operand 263 states and 275 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:51,102 INFO L93 Difference]: Finished difference Result 268 states and 280 transitions. [2023-11-24 23:51:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:51:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-24 23:51:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:51,104 INFO L225 Difference]: With dead ends: 268 [2023-11-24 23:51:51,104 INFO L226 Difference]: Without dead ends: 266 [2023-11-24 23:51:51,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:51,106 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 3 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:51,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 376 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:51:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-24 23:51:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-24 23:51:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 186 states have (on average 1.4946236559139785) internal successors, (278), 265 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 278 transitions. [2023-11-24 23:51:51,122 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 278 transitions. Word has length 17 [2023-11-24 23:51:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:51,123 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 278 transitions. [2023-11-24 23:51:51,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 278 transitions. [2023-11-24 23:51:51,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:51:51,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:51,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:51:51,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1950436603, now seen corresponding path program 1 times [2023-11-24 23:51:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387496607] [2023-11-24 23:51:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:51:51,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387496607] [2023-11-24 23:51:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387496607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:51,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:51:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907724103] [2023-11-24 23:51:51,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:51,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:51,382 INFO L87 Difference]: Start difference. First operand 266 states and 278 transitions. Second operand has 4 states, 4 states have (on average 4.75) 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) [2023-11-24 23:51:51,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:51,753 INFO L93 Difference]: Finished difference Result 449 states and 469 transitions. [2023-11-24 23:51:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:51:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) 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 20 [2023-11-24 23:51:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:51,756 INFO L225 Difference]: With dead ends: 449 [2023-11-24 23:51:51,756 INFO L226 Difference]: Without dead ends: 270 [2023-11-24 23:51:51,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:51,758 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 243 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:51,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 162 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:51:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-24 23:51:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2023-11-24 23:51:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 186 states have (on average 1.489247311827957) internal successors, (277), 265 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 277 transitions. [2023-11-24 23:51:51,783 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 277 transitions. Word has length 20 [2023-11-24 23:51:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:51,783 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 277 transitions. [2023-11-24 23:51:51,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) 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) [2023-11-24 23:51:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 277 transitions. [2023-11-24 23:51:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:51:51,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:51,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:51,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:51:51,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1529731716, now seen corresponding path program 1 times [2023-11-24 23:51:51,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:51,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119734072] [2023-11-24 23:51:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:51,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119734072] [2023-11-24 23:51:51,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119734072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:51,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053430650] [2023-11-24 23:51:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:51,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:51,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:51,878 INFO L87 Difference]: Start difference. First operand 266 states and 277 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:52,293 INFO L93 Difference]: Finished difference Result 280 states and 291 transitions. [2023-11-24 23:51:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:51:52,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 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 28 [2023-11-24 23:51:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:52,296 INFO L225 Difference]: With dead ends: 280 [2023-11-24 23:51:52,296 INFO L226 Difference]: Without dead ends: 278 [2023-11-24 23:51:52,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:51:52,297 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 74 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:52,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 228 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:51:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-24 23:51:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2023-11-24 23:51:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 267 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2023-11-24 23:51:52,315 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 28 [2023-11-24 23:51:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:52,316 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2023-11-24 23:51:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2023-11-24 23:51:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:51:52,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:52,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:52,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:51:52,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:52,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash -210894368, now seen corresponding path program 1 times [2023-11-24 23:51:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199400041] [2023-11-24 23:51:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:52,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:52,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199400041] [2023-11-24 23:51:52,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199400041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:52,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397030203] [2023-11-24 23:51:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:52,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:52,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:52,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:52,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:51:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:52,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:51:52,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:52,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397030203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:52,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-24 23:51:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80525855] [2023-11-24 23:51:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:51:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:51:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:51:52,699 INFO L87 Difference]: Start difference. First operand 268 states and 279 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:53,132 INFO L93 Difference]: Finished difference Result 278 states and 289 transitions. [2023-11-24 23:51:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:51:53,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-24 23:51:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:53,134 INFO L225 Difference]: With dead ends: 278 [2023-11-24 23:51:53,135 INFO L226 Difference]: Without dead ends: 265 [2023-11-24 23:51:53,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:51:53,136 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 128 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:53,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 195 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:51:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-24 23:51:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 255. [2023-11-24 23:51:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 188 states have (on average 1.4148936170212767) internal successors, (266), 254 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 266 transitions. [2023-11-24 23:51:53,148 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 266 transitions. Word has length 34 [2023-11-24 23:51:53,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:53,148 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 266 transitions. [2023-11-24 23:51:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:51:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 266 transitions. [2023-11-24 23:51:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:51:53,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:53,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:53,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:53,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:51:53,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2052209250, now seen corresponding path program 1 times [2023-11-24 23:51:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:53,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842443083] [2023-11-24 23:51:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:53,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842443083] [2023-11-24 23:51:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842443083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210564997] [2023-11-24 23:51:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:53,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:53,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:53,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:53,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:51:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:53,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:51:53,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:53,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210564997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:53,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140029235] [2023-11-24 23:51:53,747 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-24 23:51:53,747 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:53,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:53,757 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:53,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:51:59,482 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1140029235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:01,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 18 [2023-11-24 23:52:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629031996] [2023-11-24 23:52:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:01,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:52:01,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:52:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=267, Unknown=5, NotChecked=0, Total=342 [2023-11-24 23:52:01,653 INFO L87 Difference]: Start difference. First operand 255 states and 266 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:03,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 23:52:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:05,672 INFO L93 Difference]: Finished difference Result 464 states and 496 transitions. [2023-11-24 23:52:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 23:52:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 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 35 [2023-11-24 23:52:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:05,674 INFO L225 Difference]: With dead ends: 464 [2023-11-24 23:52:05,675 INFO L226 Difference]: Without dead ends: 220 [2023-11-24 23:52:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 16 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=150, Invalid=491, Unknown=9, NotChecked=0, Total=650 [2023-11-24 23:52:05,676 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 456 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 80 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:05,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 85 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 466 Invalid, 10 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 23:52:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-24 23:52:05,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2023-11-24 23:52:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 141 states have (on average 1.3617021276595744) internal successors, (192), 186 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2023-11-24 23:52:05,689 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 35 [2023-11-24 23:52:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:05,689 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2023-11-24 23:52:05,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2023-11-24 23:52:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:52:05,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:05,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:05,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:05,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:05,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:05,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 825078700, now seen corresponding path program 1 times [2023-11-24 23:52:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574790598] [2023-11-24 23:52:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:52:06,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574790598] [2023-11-24 23:52:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574790598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251375240] [2023-11-24 23:52:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:06,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:06,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:06,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:52:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:06,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:06,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:52:06,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:52:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251375240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780776668] [2023-11-24 23:52:06,503 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-24 23:52:06,503 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:06,505 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:06,505 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:06,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:11,388 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:14,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1780776668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:14,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [5, 5, 5] total 23 [2023-11-24 23:52:14,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675829747] [2023-11-24 23:52:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-24 23:52:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-24 23:52:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=397, Unknown=6, NotChecked=0, Total=506 [2023-11-24 23:52:14,100 INFO L87 Difference]: Start difference. First operand 187 states and 192 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:20,349 INFO L93 Difference]: Finished difference Result 303 states and 313 transitions. [2023-11-24 23:52:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 23:52:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-24 23:52:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:20,351 INFO L225 Difference]: With dead ends: 303 [2023-11-24 23:52:20,352 INFO L226 Difference]: Without dead ends: 213 [2023-11-24 23:52:20,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 102 SyntacticMatches, 20 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=406, Invalid=1217, Unknown=17, NotChecked=0, Total=1640 [2023-11-24 23:52:20,353 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 514 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 64 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:20,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 99 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 912 Invalid, 20 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 23:52:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-24 23:52:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 178. [2023-11-24 23:52:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 134 states have (on average 1.3432835820895523) internal successors, (180), 177 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2023-11-24 23:52:20,365 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 46 [2023-11-24 23:52:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:20,365 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2023-11-24 23:52:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2023-11-24 23:52:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-24 23:52:20,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:20,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:20,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:52:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:20,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:20,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 377092259, now seen corresponding path program 1 times [2023-11-24 23:52:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:20,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21891022] [2023-11-24 23:52:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:20,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21891022] [2023-11-24 23:52:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21891022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:20,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:20,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873845601] [2023-11-24 23:52:20,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:20,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:20,663 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:20,912 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2023-11-24 23:52:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:20,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 58 [2023-11-24 23:52:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:20,914 INFO L225 Difference]: With dead ends: 209 [2023-11-24 23:52:20,915 INFO L226 Difference]: Without dead ends: 207 [2023-11-24 23:52:20,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:20,916 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:20,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 138 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-24 23:52:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 180. [2023-11-24 23:52:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 136 states have (on average 1.338235294117647) internal successors, (182), 179 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2023-11-24 23:52:20,936 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 58 [2023-11-24 23:52:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:20,937 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2023-11-24 23:52:20,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2023-11-24 23:52:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-24 23:52:20,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:20,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:20,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:52:20,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:20,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:20,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1547593657, now seen corresponding path program 1 times [2023-11-24 23:52:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64082001] [2023-11-24 23:52:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:21,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64082001] [2023-11-24 23:52:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64082001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488658100] [2023-11-24 23:52:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:21,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:21,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:21,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:21,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:52:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:21,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:21,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:21,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488658100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:21,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-24 23:52:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005645435] [2023-11-24 23:52:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:21,257 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:21,546 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2023-11-24 23:52:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:21,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 64 [2023-11-24 23:52:21,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:21,549 INFO L225 Difference]: With dead ends: 207 [2023-11-24 23:52:21,550 INFO L226 Difference]: Without dead ends: 196 [2023-11-24 23:52:21,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:21,551 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 100 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:21,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 107 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-24 23:52:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 169. [2023-11-24 23:52:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 168 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2023-11-24 23:52:21,563 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 64 [2023-11-24 23:52:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:21,563 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2023-11-24 23:52:21,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2023-11-24 23:52:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:52:21,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:21,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:21,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:52:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:21,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:21,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash -730762969, now seen corresponding path program 1 times [2023-11-24 23:52:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839831452] [2023-11-24 23:52:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:21,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:21,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839831452] [2023-11-24 23:52:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839831452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:21,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182764418] [2023-11-24 23:52:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:21,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:21,883 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:21,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:52:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:21,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:21,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:22,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:52:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182764418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2084464282] [2023-11-24 23:52:22,095 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2023-11-24 23:52:22,095 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:22,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:22,096 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:22,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:26,794 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:29,361 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7368#(and (= 715827883 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~MINVAL~0#1| |ULTIMATE.start_main_~CCCELVOL2~0#1|) (<= 715827883 (div ~CELLCOUNT~0 3)))' at error location [2023-11-24 23:52:29,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:29,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-24 23:52:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220036112] [2023-11-24 23:52:29,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:52:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:52:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=688, Unknown=27, NotChecked=0, Total=870 [2023-11-24 23:52:29,364 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:29,708 INFO L93 Difference]: Finished difference Result 232 states and 246 transitions. [2023-11-24 23:52:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:52:29,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-24 23:52:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:29,710 INFO L225 Difference]: With dead ends: 232 [2023-11-24 23:52:29,710 INFO L226 Difference]: Without dead ends: 212 [2023-11-24 23:52:29,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 156 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=175, Invalid=788, Unknown=29, NotChecked=0, Total=992 [2023-11-24 23:52:29,712 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 194 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:29,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 86 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:29,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-24 23:52:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 182. [2023-11-24 23:52:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 167 states have (on average 1.1137724550898203) internal successors, (186), 181 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 186 transitions. [2023-11-24 23:52:29,725 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 186 transitions. Word has length 65 [2023-11-24 23:52:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:29,726 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 186 transitions. [2023-11-24 23:52:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 186 transitions. [2023-11-24 23:52:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-24 23:52:29,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:29,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:29,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-24 23:52:29,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:29,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:29,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -100001202, now seen corresponding path program 1 times [2023-11-24 23:52:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853359089] [2023-11-24 23:52:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:30,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:30,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853359089] [2023-11-24 23:52:30,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853359089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731412225] [2023-11-24 23:52:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:30,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:30,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:30,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:30,045 INFO L87 Difference]: Start difference. First operand 182 states and 186 transitions. Second operand has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 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) [2023-11-24 23:52:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:30,265 INFO L93 Difference]: Finished difference Result 210 states and 214 transitions. [2023-11-24 23:52:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 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) Word has length 88 [2023-11-24 23:52:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:30,267 INFO L225 Difference]: With dead ends: 210 [2023-11-24 23:52:30,267 INFO L226 Difference]: Without dead ends: 208 [2023-11-24 23:52:30,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:30,268 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 53 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:30,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 79 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-24 23:52:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 185. [2023-11-24 23:52:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 170 states have (on average 1.111764705882353) internal successors, (189), 184 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2023-11-24 23:52:30,282 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 88 [2023-11-24 23:52:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:30,283 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2023-11-24 23:52:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 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) [2023-11-24 23:52:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2023-11-24 23:52:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-24 23:52:30,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:30,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:30,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 23:52:30,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:30,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 616663922, now seen corresponding path program 1 times [2023-11-24 23:52:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:30,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256426475] [2023-11-24 23:52:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:30,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:30,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256426475] [2023-11-24 23:52:30,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256426475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189449830] [2023-11-24 23:52:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:30,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:30,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:52:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:30,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:30,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:30,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:30,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189449830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-24 23:52:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377040160] [2023-11-24 23:52:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:30,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:30,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:30,633 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 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) [2023-11-24 23:52:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:30,938 INFO L93 Difference]: Finished difference Result 208 states and 212 transitions. [2023-11-24 23:52:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 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) Word has length 94 [2023-11-24 23:52:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:30,941 INFO L225 Difference]: With dead ends: 208 [2023-11-24 23:52:30,941 INFO L226 Difference]: Without dead ends: 197 [2023-11-24 23:52:30,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:30,942 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 78 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:30,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-24 23:52:30,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 174. [2023-11-24 23:52:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0470588235294118) internal successors, (178), 173 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2023-11-24 23:52:30,957 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 94 [2023-11-24 23:52:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:30,958 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2023-11-24 23:52:30,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 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) [2023-11-24 23:52:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2023-11-24 23:52:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-24 23:52:30,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:30,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:30,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:52:31,160 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 83 more)] === [2023-11-24 23:52:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1936712626, now seen corresponding path program 1 times [2023-11-24 23:52:31,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60698826] [2023-11-24 23:52:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:31,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:31,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60698826] [2023-11-24 23:52:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60698826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:31,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919730931] [2023-11-24 23:52:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:31,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:31,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:31,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19be833c-cfac-404b-be9f-8f18c09986a0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:52:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:31,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:31,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:31,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919730931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947118898] [2023-11-24 23:52:31,568 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2023-11-24 23:52:31,568 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:31,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:31,570 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:31,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs