./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/ps6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ --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 7c085d451551fa473fcfd5042cc18772a43a12ab8154b83bfec7555781047d66 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:15:32,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:15:32,932 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:15:32,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:15:32,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:15:32,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:15:32,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:15:32,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:15:32,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:15:32,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:15:32,972 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:15:32,973 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:15:32,973 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:15:32,974 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:15:32,975 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:15:32,975 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:15:32,976 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:15:32,976 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:15:32,977 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:15:32,977 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:15:32,978 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:15:32,978 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:15:32,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:15:32,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:15:32,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:15:32,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:15:32,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:15:32,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:15:32,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:15:32,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:15:32,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:15:32,983 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:15:32,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:15:32,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:15:32,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:15:32,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:15:32,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:15:32,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:15:32,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:32,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:15:32,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:15:32,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:15:32,989 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:15:32,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:15:32,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:15:32,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:15:32,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:15:32,990 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_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c085d451551fa473fcfd5042cc18772a43a12ab8154b83bfec7555781047d66 [2023-11-19 05:15:33,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:15:33,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:15:33,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:15:33,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:15:33,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:15:33,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench/ps6.c [2023-11-19 05:15:36,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:15:36,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:15:36,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/sv-benchmarks/c/nla-digbench/ps6.c [2023-11-19 05:15:36,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/data/5dc6674dd/f11afa3141b14dbbbbdecc5af4992780/FLAGb1b3f04e6 [2023-11-19 05:15:36,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/data/5dc6674dd/f11afa3141b14dbbbbdecc5af4992780 [2023-11-19 05:15:36,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:15:36,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:15:36,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:36,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:15:36,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:15:36,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:36,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14db17e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36, skipping insertion in model container [2023-11-19 05:15:36,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:36,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:36,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:36,937 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:15:36,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:36,975 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:15:36,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36 WrapperNode [2023-11-19 05:15:36,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:36,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:36,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:15:36,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:15:36,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:36,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,031 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 148 [2023-11-19 05:15:37,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:37,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:15:37,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:15:37,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:15:37,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:15:37,072 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:15:37,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:15:37,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:15:37,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (1/1) ... [2023-11-19 05:15:37,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:37,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:15:37,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:15:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:15:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:15:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:15:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:15:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:15:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:15:37,286 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:15:37,291 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:15:38,045 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:15:38,076 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:15:38,077 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:15:38,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:38 BoogieIcfgContainer [2023-11-19 05:15:38,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:15:38,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:15:38,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:15:38,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:15:38,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:36" (1/3) ... [2023-11-19 05:15:38,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3a6a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:38, skipping insertion in model container [2023-11-19 05:15:38,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:36" (2/3) ... [2023-11-19 05:15:38,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3a6a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:38, skipping insertion in model container [2023-11-19 05:15:38,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:38" (3/3) ... [2023-11-19 05:15:38,096 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6.c [2023-11-19 05:15:38,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:15:38,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2023-11-19 05:15:38,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:15:38,182 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;@5764f677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:15:38,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-19 05:15:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 107 states have (on average 1.97196261682243) internal successors, (211), 209 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:15:38,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:38,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:15:38,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:38,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 272316, now seen corresponding path program 1 times [2023-11-19 05:15:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145252362] [2023-11-19 05:15:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:38,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145252362] [2023-11-19 05:15:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145252362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:38,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:15:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681905834] [2023-11-19 05:15:38,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:38,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:38,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:38,521 INFO L87 Difference]: Start difference. First operand has 214 states, 107 states have (on average 1.97196261682243) internal successors, (211), 209 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:39,176 INFO L93 Difference]: Finished difference Result 437 states and 510 transitions. [2023-11-19 05:15:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:15:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:39,200 INFO L225 Difference]: With dead ends: 437 [2023-11-19 05:15:39,200 INFO L226 Difference]: Without dead ends: 287 [2023-11-19 05:15:39,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:39,222 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 103 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:39,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 119 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:15:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-19 05:15:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2023-11-19 05:15:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 196 states have (on average 1.4438775510204083) internal successors, (283), 272 states have internal predecessors, (283), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 289 transitions. [2023-11-19 05:15:39,321 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 289 transitions. Word has length 3 [2023-11-19 05:15:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:39,322 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 289 transitions. [2023-11-19 05:15:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 289 transitions. [2023-11-19 05:15:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:15:39,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:39,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:15:39,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:39,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 276383170, now seen corresponding path program 1 times [2023-11-19 05:15:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:39,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888146105] [2023-11-19 05:15:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:39,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:39,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:39,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795854483] [2023-11-19 05:15:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:39,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:39,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:39,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:15:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:39,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:39,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:39,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:39,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888146105] [2023-11-19 05:15:39,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:39,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795854483] [2023-11-19 05:15:39,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795854483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:39,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:39,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:15:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019944527] [2023-11-19 05:15:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:39,648 INFO L87 Difference]: Start difference. First operand 277 states and 289 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:39,732 INFO L93 Difference]: Finished difference Result 301 states and 307 transitions. [2023-11-19 05:15:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:39,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-19 05:15:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:39,735 INFO L225 Difference]: With dead ends: 301 [2023-11-19 05:15:39,735 INFO L226 Difference]: Without dead ends: 299 [2023-11-19 05:15:39,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:39,738 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 76 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:39,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 333 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:15:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-19 05:15:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2023-11-19 05:15:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 196 states have (on average 1.433673469387755) internal successors, (281), 272 states have internal predecessors, (281), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 287 transitions. [2023-11-19 05:15:39,756 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 287 transitions. Word has length 41 [2023-11-19 05:15:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:39,756 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 287 transitions. [2023-11-19 05:15:39,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 287 transitions. [2023-11-19 05:15:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 05:15:39,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:39,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:39,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:39,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:39,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash -22056201, now seen corresponding path program 1 times [2023-11-19 05:15:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419293537] [2023-11-19 05:15:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:39,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:39,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227072080] [2023-11-19 05:15:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:39,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:40,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:15:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:40,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:40,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:40,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:40,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419293537] [2023-11-19 05:15:40,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227072080] [2023-11-19 05:15:40,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227072080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:40,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:40,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:15:40,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808073004] [2023-11-19 05:15:40,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:40,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:40,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:40,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:40,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:40,156 INFO L87 Difference]: Start difference. First operand 277 states and 287 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:40,229 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2023-11-19 05:15:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-11-19 05:15:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:40,232 INFO L225 Difference]: With dead ends: 303 [2023-11-19 05:15:40,232 INFO L226 Difference]: Without dead ends: 298 [2023-11-19 05:15:40,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:40,234 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 71 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:40,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 337 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:15:40,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-19 05:15:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 276. [2023-11-19 05:15:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 195 states have (on average 1.4153846153846155) internal successors, (276), 271 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 282 transitions. [2023-11-19 05:15:40,247 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 282 transitions. Word has length 42 [2023-11-19 05:15:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:40,248 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 282 transitions. [2023-11-19 05:15:40,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 282 transitions. [2023-11-19 05:15:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 05:15:40,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:40,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:40,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:40,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:40,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -683742108, now seen corresponding path program 1 times [2023-11-19 05:15:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361837825] [2023-11-19 05:15:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:40,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288909026] [2023-11-19 05:15:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:40,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:40,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:40,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:15:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:40,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:40,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:40,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:40,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361837825] [2023-11-19 05:15:40,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288909026] [2023-11-19 05:15:40,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288909026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:40,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075925102] [2023-11-19 05:15:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:40,702 INFO L87 Difference]: Start difference. First operand 276 states and 282 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2023-11-19 05:15:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:40,953 INFO L93 Difference]: Finished difference Result 298 states and 300 transitions. [2023-11-19 05:15:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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 43 [2023-11-19 05:15:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:40,956 INFO L225 Difference]: With dead ends: 298 [2023-11-19 05:15:40,956 INFO L226 Difference]: Without dead ends: 255 [2023-11-19 05:15:40,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:40,958 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 153 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:40,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 262 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:15:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-19 05:15:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 235. [2023-11-19 05:15:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 154 states have (on average 1.5129870129870129) internal successors, (233), 230 states have internal predecessors, (233), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 239 transitions. [2023-11-19 05:15:40,968 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 239 transitions. Word has length 43 [2023-11-19 05:15:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:40,969 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 239 transitions. [2023-11-19 05:15:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 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) [2023-11-19 05:15:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 239 transitions. [2023-11-19 05:15:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 05:15:40,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:40,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:40,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:41,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:41,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1104645363, now seen corresponding path program 1 times [2023-11-19 05:15:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503524821] [2023-11-19 05:15:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:41,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994149197] [2023-11-19 05:15:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:41,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:41,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:41,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:41,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:15:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:41,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:41,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:41,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:41,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503524821] [2023-11-19 05:15:41,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994149197] [2023-11-19 05:15:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994149197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:41,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:41,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630625549] [2023-11-19 05:15:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:41,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:41,386 INFO L87 Difference]: Start difference. First operand 235 states and 239 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:41,403 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2023-11-19 05:15:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:41,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-19 05:15:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:41,405 INFO L225 Difference]: With dead ends: 235 [2023-11-19 05:15:41,405 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 05:15:41,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:41,407 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 135 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:41,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 181 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:15:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 05:15:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-19 05:15:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 154 states have (on average 1.5) internal successors, (231), 229 states have internal predecessors, (231), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2023-11-19 05:15:41,423 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 49 [2023-11-19 05:15:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:41,425 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2023-11-19 05:15:41,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2023-11-19 05:15:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:15:41,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:41,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:41,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:41,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:41,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 115732250, now seen corresponding path program 1 times [2023-11-19 05:15:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:41,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786676658] [2023-11-19 05:15:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:41,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:41,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71303851] [2023-11-19 05:15:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:41,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:41,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:15:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:41,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:15:41,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:41,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:41,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786676658] [2023-11-19 05:15:41,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71303851] [2023-11-19 05:15:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71303851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:41,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:41,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558795270] [2023-11-19 05:15:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:41,788 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:41,808 INFO L93 Difference]: Finished difference Result 235 states and 237 transitions. [2023-11-19 05:15:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 05:15:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:41,810 INFO L225 Difference]: With dead ends: 235 [2023-11-19 05:15:41,810 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 05:15:41,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:41,815 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:15:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 05:15:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-19 05:15:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 154 states have (on average 1.4935064935064934) internal successors, (230), 229 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 236 transitions. [2023-11-19 05:15:41,827 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 236 transitions. Word has length 50 [2023-11-19 05:15:41,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:41,827 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 236 transitions. [2023-11-19 05:15:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 236 transitions. [2023-11-19 05:15:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 05:15:41,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:41,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:41,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:42,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:42,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:42,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 906310750, now seen corresponding path program 1 times [2023-11-19 05:15:42,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:42,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29866709] [2023-11-19 05:15:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:42,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931392678] [2023-11-19 05:15:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:42,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:42,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:42,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:15:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:42,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:15:42,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:42,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:42,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29866709] [2023-11-19 05:15:42,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931392678] [2023-11-19 05:15:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931392678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40017191] [2023-11-19 05:15:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:42,240 INFO L87 Difference]: Start difference. First operand 234 states and 236 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:42,720 INFO L93 Difference]: Finished difference Result 416 states and 420 transitions. [2023-11-19 05:15:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:42,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-11-19 05:15:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:42,723 INFO L225 Difference]: With dead ends: 416 [2023-11-19 05:15:42,723 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 05:15:42,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:42,724 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 115 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:42,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:15:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 05:15:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 338. [2023-11-19 05:15:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 256 states have (on average 1.34765625) internal successors, (345), 331 states have internal predecessors, (345), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:15:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 355 transitions. [2023-11-19 05:15:42,737 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 355 transitions. Word has length 54 [2023-11-19 05:15:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:42,738 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 355 transitions. [2023-11-19 05:15:42,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 355 transitions. [2023-11-19 05:15:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 05:15:42,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:42,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:42,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:42,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 05:15:42,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:42,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:42,960 INFO L85 PathProgramCache]: Analyzing trace with hash -975086375, now seen corresponding path program 1 times [2023-11-19 05:15:42,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786898140] [2023-11-19 05:15:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:42,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:42,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908837491] [2023-11-19 05:15:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:42,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:42,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:42,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:42,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:15:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:43,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:43,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:43,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:43,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786898140] [2023-11-19 05:15:43,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:43,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908837491] [2023-11-19 05:15:43,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908837491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:43,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:43,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483770435] [2023-11-19 05:15:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:43,134 INFO L87 Difference]: Start difference. First operand 338 states and 355 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:43,530 INFO L93 Difference]: Finished difference Result 340 states and 355 transitions. [2023-11-19 05:15:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-19 05:15:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:43,533 INFO L225 Difference]: With dead ends: 340 [2023-11-19 05:15:43,533 INFO L226 Difference]: Without dead ends: 339 [2023-11-19 05:15:43,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:43,534 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 55 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:43,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 303 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:15:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-19 05:15:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2023-11-19 05:15:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 256 states have (on average 1.34375) internal successors, (344), 331 states have internal predecessors, (344), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:15:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 354 transitions. [2023-11-19 05:15:43,548 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 354 transitions. Word has length 61 [2023-11-19 05:15:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:43,548 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 354 transitions. [2023-11-19 05:15:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 354 transitions. [2023-11-19 05:15:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 05:15:43,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:43,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:43,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:43,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:43,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash -162906394, now seen corresponding path program 1 times [2023-11-19 05:15:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852416607] [2023-11-19 05:15:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:43,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307089817] [2023-11-19 05:15:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:43,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:43,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:43,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:15:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:43,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:43,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:43,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:43,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852416607] [2023-11-19 05:15:43,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307089817] [2023-11-19 05:15:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307089817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112515114] [2023-11-19 05:15:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:43,972 INFO L87 Difference]: Start difference. First operand 338 states and 354 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:44,076 INFO L93 Difference]: Finished difference Result 339 states and 354 transitions. [2023-11-19 05:15:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:44,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-11-19 05:15:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:44,079 INFO L225 Difference]: With dead ends: 339 [2023-11-19 05:15:44,079 INFO L226 Difference]: Without dead ends: 338 [2023-11-19 05:15:44,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:44,080 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 47 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:44,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 302 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:15:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-19 05:15:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-19 05:15:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 256 states have (on average 1.33984375) internal successors, (343), 331 states have internal predecessors, (343), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:15:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 353 transitions. [2023-11-19 05:15:44,093 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 353 transitions. Word has length 62 [2023-11-19 05:15:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:44,094 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 353 transitions. [2023-11-19 05:15:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 353 transitions. [2023-11-19 05:15:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 05:15:44,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:44,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:15:44,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:44,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:44,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1364932722, now seen corresponding path program 1 times [2023-11-19 05:15:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293578485] [2023-11-19 05:15:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:44,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:44,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119155403] [2023-11-19 05:15:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:44,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:44,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:44,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:44,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:15:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:44,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:15:44,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:44,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:15:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:45,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:15:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293578485] [2023-11-19 05:15:45,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:15:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119155403] [2023-11-19 05:15:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119155403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:15:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536123542] [2023-11-19 05:15:45,137 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-11-19 05:15:45,138 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:15:45,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:15:45,150 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:15:45,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:15:52,082 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 132 for LOIs [2023-11-19 05:15:52,221 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:15:57,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [536123542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:57,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:15:57,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4] total 27 [2023-11-19 05:15:57,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952542893] [2023-11-19 05:15:57,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:57,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 05:15:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:15:57,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 05:15:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:15:57,026 INFO L87 Difference]: Start difference. First operand 338 states and 353 transitions. Second operand has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:59,632 INFO L93 Difference]: Finished difference Result 338 states and 353 transitions. [2023-11-19 05:15:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 05:15:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-11-19 05:15:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:59,634 INFO L225 Difference]: With dead ends: 338 [2023-11-19 05:15:59,634 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 05:15:59,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 209 SyntacticMatches, 69 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=348, Invalid=984, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 05:15:59,636 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 545 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:59,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 22 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 05:15:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 05:15:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 193. [2023-11-19 05:15:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.0161290322580645) internal successors, (189), 188 states have internal predecessors, (189), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:15:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2023-11-19 05:15:59,649 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 102 [2023-11-19 05:15:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:59,650 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2023-11-19 05:15:59,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:15:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2023-11-19 05:15:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 05:15:59,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:59,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:15:59,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:15:59,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:15:59,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 636758699, now seen corresponding path program 1 times [2023-11-19 05:15:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:15:59,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258265798] [2023-11-19 05:15:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:15:59,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:15:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895549095] [2023-11-19 05:15:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:59,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:15:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:59,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:15:59,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:15:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:59,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:15:59,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:00,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:16:00,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258265798] [2023-11-19 05:16:00,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:16:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895549095] [2023-11-19 05:16:00,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895549095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1732670934] [2023-11-19 05:16:00,562 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-11-19 05:16:00,562 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:00,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:00,563 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:00,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:04,730 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 132 for LOIs [2023-11-19 05:16:04,816 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:16:09,494 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8832#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 357913941) (<= 178956971 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:16:09,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:16:09,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:16:09,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 05:16:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232194486] [2023-11-19 05:16:09,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:16:09,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:16:09,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:16:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-11-19 05:16:09,497 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 8 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:16:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:10,046 INFO L93 Difference]: Finished difference Result 317 states and 322 transitions. [2023-11-19 05:16:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:16:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 8 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2023-11-19 05:16:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:10,049 INFO L225 Difference]: With dead ends: 317 [2023-11-19 05:16:10,049 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 05:16:10,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 210 SyntacticMatches, 70 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:16:10,051 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 215 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:10,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 137 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:16:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 05:16:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 269. [2023-11-19 05:16:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 261 states have (on average 1.0191570881226053) internal successors, (266), 263 states have internal predecessors, (266), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:16:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 274 transitions. [2023-11-19 05:16:10,072 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 274 transitions. Word has length 103 [2023-11-19 05:16:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:10,072 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 274 transitions. [2023-11-19 05:16:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 8 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:16:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 274 transitions. [2023-11-19 05:16:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-19 05:16:10,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:10,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-11-19 05:16:10,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:10,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:10,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:16:10,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1109187534, now seen corresponding path program 1 times [2023-11-19 05:16:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983762100] [2023-11-19 05:16:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:10,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:16:10,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873937444] [2023-11-19 05:16:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:10,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:10,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:10,308 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:10,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:16:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:10,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:16:10,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:16:10,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:16:11,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983762100] [2023-11-19 05:16:11,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:16:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873937444] [2023-11-19 05:16:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873937444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591937163] [2023-11-19 05:16:11,205 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2023-11-19 05:16:11,205 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:11,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:11,206 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:11,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:14,803 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 132 for LOIs [2023-11-19 05:16:14,876 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:16:20,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10346#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1073741824) (<= 1073741825 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))))' at error location [2023-11-19 05:16:20,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:16:20,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:16:20,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 05:16:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006537697] [2023-11-19 05:16:20,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:16:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:16:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:16:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:16:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2023-11-19 05:16:20,550 INFO L87 Difference]: Start difference. First operand 269 states and 274 transitions. Second operand has 8 states, 7 states have (on average 40.42857142857143) internal successors, (283), 8 states have internal predecessors, (283), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:16:23,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 05:16:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:16:24,904 INFO L93 Difference]: Finished difference Result 616 states and 629 transitions. [2023-11-19 05:16:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:16:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 40.42857142857143) internal successors, (283), 8 states have internal predecessors, (283), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 147 [2023-11-19 05:16:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:16:24,908 INFO L225 Difference]: With dead ends: 616 [2023-11-19 05:16:24,908 INFO L226 Difference]: Without dead ends: 615 [2023-11-19 05:16:24,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 320 SyntacticMatches, 92 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:16:24,910 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 631 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:16:24,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 123 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 936 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 05:16:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-19 05:16:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 429. [2023-11-19 05:16:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 418 states have (on average 1.0215311004784688) internal successors, (427), 420 states have internal predecessors, (427), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:16:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2023-11-19 05:16:24,939 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 147 [2023-11-19 05:16:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:16:24,939 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2023-11-19 05:16:24,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 40.42857142857143) internal successors, (283), 8 states have internal predecessors, (283), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:16:24,940 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2023-11-19 05:16:24,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 05:16:24,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:16:24,942 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 05:16:24,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:16:25,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:16:25,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-19 05:16:25,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:16:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1805725302, now seen corresponding path program 1 times [2023-11-19 05:16:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:16:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935811171] [2023-11-19 05:16:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:16:25,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:16:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269995794] [2023-11-19 05:16:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:16:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:16:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:16:25,175 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:16:25,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5986be28-234b-4619-8486-9065ef32b63f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:16:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:16:25,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:16:25,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:16:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:16:25,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:16:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:16:26,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:16:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935811171] [2023-11-19 05:16:26,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:16:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269995794] [2023-11-19 05:16:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269995794] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:16:26,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1465117867] [2023-11-19 05:16:26,056 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2023-11-19 05:16:26,056 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:16:26,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:16:26,057 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:16:26,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:16:30,198 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 184 for LOIs [2023-11-19 05:16:30,383 INFO L180 IcfgInterpreter]: Interpretation finished