./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:25,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:25,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:14:25,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:25,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:25,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:25,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:25,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:25,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:25,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:25,720 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:25,721 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:25,722 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:25,722 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:14:25,723 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:25,724 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:25,724 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:14:25,725 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:14:25,725 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:25,726 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:14:25,727 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:14:25,728 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:14:25,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:25,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:14:25,730 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:14:25,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:25,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:14:25,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:25,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:14:25,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:25,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:14:25,734 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:14:25,735 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:14:25,735 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:14:25,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:14:25,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:25,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:25,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:25,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:25,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:25,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:25,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:14:25,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:14:25,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:14:25,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:14:25,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:25,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:25,742 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_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2023-11-12 00:14:26,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:26,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:26,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:26,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:26,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:26,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2023-11-12 00:14:29,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:29,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:29,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2023-11-12 00:14:29,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/data/9a6a73cb5/c70c4d47bda8496786a7cba6c93752c2/FLAG4e1c523d2 [2023-11-12 00:14:29,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/data/9a6a73cb5/c70c4d47bda8496786a7cba6c93752c2 [2023-11-12 00:14:29,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:29,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:29,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:29,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:29,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:29,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d713a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29, skipping insertion in model container [2023-11-12 00:14:29,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:29,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:29,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:29,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:29,909 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:29,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29 WrapperNode [2023-11-12 00:14:29,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:29,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:29,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:29,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:29,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,951 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-12 00:14:29,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:29,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:29,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:29,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:29,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:29,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:30,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:30,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:30,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:30,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:30,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:30,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:30,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (1/1) ... [2023-11-12 00:14:30,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:30,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:30,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:14:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:14:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:14:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:30,174 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:30,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:30,441 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:30,492 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:30,492 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:14:30,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:30 BoogieIcfgContainer [2023-11-12 00:14:30,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:30,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:30,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:30,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:30,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:29" (1/3) ... [2023-11-12 00:14:30,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e16a90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:30, skipping insertion in model container [2023-11-12 00:14:30,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29" (2/3) ... [2023-11-12 00:14:30,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e16a90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:30, skipping insertion in model container [2023-11-12 00:14:30,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:30" (3/3) ... [2023-11-12 00:14:30,506 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2023-11-12 00:14:30,528 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:30,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 00:14:30,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:30,590 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;@1de1b2e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:30,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-12 00:14:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.962962962962963) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:14:30,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:30,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:14:30,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash 4900873, now seen corresponding path program 1 times [2023-11-12 00:14:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478654557] [2023-11-12 00:14:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:30,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896867034] [2023-11-12 00:14:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:30,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:30,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:14:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:30,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:30,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:30,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:30,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478654557] [2023-11-12 00:14:30,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896867034] [2023-11-12 00:14:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896867034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:14:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574185848] [2023-11-12 00:14:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:30,875 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.962962962962963) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:30,951 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-12 00:14:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:14:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:30,962 INFO L225 Difference]: With dead ends: 48 [2023-11-12 00:14:30,962 INFO L226 Difference]: Without dead ends: 45 [2023-11-12 00:14:30,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:30,969 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:30,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 19 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-12 00:14:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-12 00:14:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-11-12 00:14:31,009 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 4 [2023-11-12 00:14:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:31,010 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-11-12 00:14:31,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-11-12 00:14:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:14:31,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:31,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:14:31,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:31,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:31,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:31,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash 151927148, now seen corresponding path program 1 times [2023-11-12 00:14:31,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5039992] [2023-11-12 00:14:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:31,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879330297] [2023-11-12 00:14:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:31,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:31,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:31,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:31,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:14:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:31,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:31,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:31,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:31,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5039992] [2023-11-12 00:14:31,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879330297] [2023-11-12 00:14:31,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879330297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:31,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:31,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:14:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299522649] [2023-11-12 00:14:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:31,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:31,322 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:31,481 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2023-11-12 00:14:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:14:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:31,487 INFO L225 Difference]: With dead ends: 89 [2023-11-12 00:14:31,488 INFO L226 Difference]: Without dead ends: 87 [2023-11-12 00:14:31,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:31,490 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:31,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 40 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-12 00:14:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 71. [2023-11-12 00:14:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 53 states have (on average 1.830188679245283) internal successors, (97), 70 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2023-11-12 00:14:31,516 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 5 [2023-11-12 00:14:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:31,517 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2023-11-12 00:14:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2023-11-12 00:14:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:14:31,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:31,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:14:31,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 00:14:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:31,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:31,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash 151808967, now seen corresponding path program 1 times [2023-11-12 00:14:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049939207] [2023-11-12 00:14:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:31,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689544840] [2023-11-12 00:14:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:31,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:31,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:31,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:31,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:14:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:31,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:31,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:31,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:31,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049939207] [2023-11-12 00:14:31,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:31,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689544840] [2023-11-12 00:14:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689544840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:31,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:31,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114478239] [2023-11-12 00:14:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:31,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:31,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:31,829 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:31,955 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2023-11-12 00:14:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:14:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:31,957 INFO L225 Difference]: With dead ends: 71 [2023-11-12 00:14:31,957 INFO L226 Difference]: Without dead ends: 69 [2023-11-12 00:14:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:31,959 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:31,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 17 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:31,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-12 00:14:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-12 00:14:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 68 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2023-11-12 00:14:31,971 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 5 [2023-11-12 00:14:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:31,972 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2023-11-12 00:14:31,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2023-11-12 00:14:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:14:31,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:31,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:14:31,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 00:14:32,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:32,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 151805294, now seen corresponding path program 1 times [2023-11-12 00:14:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132058739] [2023-11-12 00:14:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:32,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154219587] [2023-11-12 00:14:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:32,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:32,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:14:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:32,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:32,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:32,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:32,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132058739] [2023-11-12 00:14:32,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154219587] [2023-11-12 00:14:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154219587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:32,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:32,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852633123] [2023-11-12 00:14:32,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:32,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:32,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:32,288 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:32,350 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2023-11-12 00:14:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:14:32,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:32,352 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:14:32,352 INFO L226 Difference]: Without dead ends: 67 [2023-11-12 00:14:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:32,353 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:32,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 9 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-12 00:14:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-12 00:14:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 53 states have (on average 1.679245283018868) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2023-11-12 00:14:32,363 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 5 [2023-11-12 00:14:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:32,363 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2023-11-12 00:14:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2023-11-12 00:14:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:14:32,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:32,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:14:32,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:32,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash 411110759, now seen corresponding path program 1 times [2023-11-12 00:14:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456409991] [2023-11-12 00:14:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:32,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:32,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564941654] [2023-11-12 00:14:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:32,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:32,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:14:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:32,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:32,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:32,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:32,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456409991] [2023-11-12 00:14:32,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564941654] [2023-11-12 00:14:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564941654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:32,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:32,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:32,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125070958] [2023-11-12 00:14:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:32,649 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:32,741 INFO L93 Difference]: Finished difference Result 131 states and 174 transitions. [2023-11-12 00:14:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:32,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:14:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:32,743 INFO L225 Difference]: With dead ends: 131 [2023-11-12 00:14:32,743 INFO L226 Difference]: Without dead ends: 129 [2023-11-12 00:14:32,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:32,745 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:32,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-12 00:14:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2023-11-12 00:14:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.6881720430107527) internal successors, (157), 106 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 157 transitions. [2023-11-12 00:14:32,761 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 157 transitions. Word has length 6 [2023-11-12 00:14:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:32,761 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 157 transitions. [2023-11-12 00:14:32,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 157 transitions. [2023-11-12 00:14:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:14:32,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:32,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:14:32,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:32,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:32,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 410996881, now seen corresponding path program 1 times [2023-11-12 00:14:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320840996] [2023-11-12 00:14:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:32,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:32,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926851750] [2023-11-12 00:14:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:32,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:32,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:32,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:14:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:33,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:33,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:33,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:33,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320840996] [2023-11-12 00:14:33,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926851750] [2023-11-12 00:14:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926851750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933500926] [2023-11-12 00:14:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:33,060 INFO L87 Difference]: Start difference. First operand 107 states and 157 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:33,211 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2023-11-12 00:14:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:14:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:33,213 INFO L225 Difference]: With dead ends: 133 [2023-11-12 00:14:33,213 INFO L226 Difference]: Without dead ends: 131 [2023-11-12 00:14:33,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:33,222 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:33,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 45 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:33,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-12 00:14:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2023-11-12 00:14:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.6666666666666667) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2023-11-12 00:14:33,237 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 6 [2023-11-12 00:14:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:33,237 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2023-11-12 00:14:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2023-11-12 00:14:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:14:33,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:33,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:33,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:33,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:33,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:33,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash -143998512, now seen corresponding path program 1 times [2023-11-12 00:14:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240284774] [2023-11-12 00:14:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:33,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:33,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986099002] [2023-11-12 00:14:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:33,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:33,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:33,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:33,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:14:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:33,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:33,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:33,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:33,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240284774] [2023-11-12 00:14:33,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986099002] [2023-11-12 00:14:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986099002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:33,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785534638] [2023-11-12 00:14:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:14:33,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:14:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:33,583 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:33,668 INFO L93 Difference]: Finished difference Result 107 states and 155 transitions. [2023-11-12 00:14:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:14:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:33,671 INFO L225 Difference]: With dead ends: 107 [2023-11-12 00:14:33,671 INFO L226 Difference]: Without dead ends: 103 [2023-11-12 00:14:33,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:33,672 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:33,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-12 00:14:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-12 00:14:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 102 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2023-11-12 00:14:33,686 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 7 [2023-11-12 00:14:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:33,687 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2023-11-12 00:14:33,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2023-11-12 00:14:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:14:33,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:33,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:33,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:33,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:33,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:33,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash -168986509, now seen corresponding path program 1 times [2023-11-12 00:14:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:33,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607826149] [2023-11-12 00:14:33,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:33,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711560192] [2023-11-12 00:14:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:33,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:33,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:14:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:33,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:33,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:34,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:34,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:34,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607826149] [2023-11-12 00:14:34,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:34,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711560192] [2023-11-12 00:14:34,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711560192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:34,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:34,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840865763] [2023-11-12 00:14:34,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:34,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:14:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:14:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:34,049 INFO L87 Difference]: Start difference. First operand 103 states and 139 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:34,242 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2023-11-12 00:14:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:14:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:14:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:34,244 INFO L225 Difference]: With dead ends: 141 [2023-11-12 00:14:34,244 INFO L226 Difference]: Without dead ends: 137 [2023-11-12 00:14:34,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:34,246 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 93 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:34,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 37 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-12 00:14:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 117. [2023-11-12 00:14:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 107 states have (on average 1.4485981308411215) internal successors, (155), 116 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2023-11-12 00:14:34,261 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 8 [2023-11-12 00:14:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2023-11-12 00:14:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2023-11-12 00:14:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:14:34,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:34,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-12 00:14:34,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-12 00:14:34,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:34,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:34,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -78584395, now seen corresponding path program 1 times [2023-11-12 00:14:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:34,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202319888] [2023-11-12 00:14:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:34,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429130672] [2023-11-12 00:14:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:34,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:34,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:14:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:34,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:34,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:14:34,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:34,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202319888] [2023-11-12 00:14:34,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429130672] [2023-11-12 00:14:34,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429130672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:34,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:34,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196027496] [2023-11-12 00:14:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:34,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:34,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:34,615 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:34,700 INFO L93 Difference]: Finished difference Result 211 states and 269 transitions. [2023-11-12 00:14:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:14:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:34,702 INFO L225 Difference]: With dead ends: 211 [2023-11-12 00:14:34,702 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 00:14:34,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:34,706 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 90 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 32 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 00:14:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2023-11-12 00:14:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 107 states have (on average 1.411214953271028) internal successors, (151), 116 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 151 transitions. [2023-11-12 00:14:34,724 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 151 transitions. Word has length 9 [2023-11-12 00:14:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:34,724 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 151 transitions. [2023-11-12 00:14:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 151 transitions. [2023-11-12 00:14:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:14:34,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:34,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-12 00:14:34,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:34,938 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:34,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1393074584, now seen corresponding path program 1 times [2023-11-12 00:14:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016399675] [2023-11-12 00:14:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:34,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:34,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356113662] [2023-11-12 00:14:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:34,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:34,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 00:14:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:35,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:35,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:14:35,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:35,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016399675] [2023-11-12 00:14:35,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356113662] [2023-11-12 00:14:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356113662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:35,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701719758] [2023-11-12 00:14:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:35,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:35,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:35,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:35,039 INFO L87 Difference]: Start difference. First operand 117 states and 151 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:35,123 INFO L93 Difference]: Finished difference Result 263 states and 346 transitions. [2023-11-12 00:14:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:35,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:14:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:35,125 INFO L225 Difference]: With dead ends: 263 [2023-11-12 00:14:35,125 INFO L226 Difference]: Without dead ends: 163 [2023-11-12 00:14:35,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:35,128 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:35,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 40 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-12 00:14:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2023-11-12 00:14:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 158 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 203 transitions. [2023-11-12 00:14:35,141 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 203 transitions. Word has length 10 [2023-11-12 00:14:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:35,141 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 203 transitions. [2023-11-12 00:14:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 203 transitions. [2023-11-12 00:14:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:14:35,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:35,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:35,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:35,348 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:35,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash -348858678, now seen corresponding path program 1 times [2023-11-12 00:14:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:35,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604535001] [2023-11-12 00:14:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:35,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:35,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316354523] [2023-11-12 00:14:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:35,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:35,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 00:14:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:35,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:35,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:35,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:35,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:35,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604535001] [2023-11-12 00:14:35,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316354523] [2023-11-12 00:14:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316354523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609692831] [2023-11-12 00:14:35,657 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-12 00:14:35,658 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:35,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:35,669 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:35,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:36,722 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:37,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [609692831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:37,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:37,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12 [2023-11-12 00:14:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415115859] [2023-11-12 00:14:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:14:37,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:14:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:14:37,194 INFO L87 Difference]: Start difference. First operand 159 states and 203 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:37,485 INFO L93 Difference]: Finished difference Result 302 states and 387 transitions. [2023-11-12 00:14:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:14:37,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 00:14:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:37,487 INFO L225 Difference]: With dead ends: 302 [2023-11-12 00:14:37,488 INFO L226 Difference]: Without dead ends: 160 [2023-11-12 00:14:37,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=124, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:14:37,489 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-12 00:14:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-12 00:14:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 150 states have (on average 1.34) internal successors, (201), 159 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2023-11-12 00:14:37,502 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 15 [2023-11-12 00:14:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:37,503 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2023-11-12 00:14:37,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2023-11-12 00:14:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:14:37,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:37,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:37,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:37,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:37,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1962318258, now seen corresponding path program 1 times [2023-11-12 00:14:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758417847] [2023-11-12 00:14:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:37,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:37,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40728862] [2023-11-12 00:14:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:37,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:37,730 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:37,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 00:14:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:37,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:37,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:37,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:37,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758417847] [2023-11-12 00:14:37,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40728862] [2023-11-12 00:14:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40728862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526659472] [2023-11-12 00:14:37,929 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:14:37,929 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:37,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:37,930 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:37,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:38,591 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:39,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3655#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 2147483648 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-12 00:14:39,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:39,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:39,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-12 00:14:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070739791] [2023-11-12 00:14:39,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:14:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:39,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:14:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:14:39,068 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:39,310 INFO L93 Difference]: Finished difference Result 557 states and 733 transitions. [2023-11-12 00:14:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 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 24 [2023-11-12 00:14:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:39,314 INFO L225 Difference]: With dead ends: 557 [2023-11-12 00:14:39,314 INFO L226 Difference]: Without dead ends: 415 [2023-11-12 00:14:39,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:14:39,316 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 272 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:39,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 60 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-12 00:14:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 391. [2023-11-12 00:14:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 381 states have (on average 1.3070866141732282) internal successors, (498), 390 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 498 transitions. [2023-11-12 00:14:39,340 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 498 transitions. Word has length 24 [2023-11-12 00:14:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:39,341 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 498 transitions. [2023-11-12 00:14:39,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 498 transitions. [2023-11-12 00:14:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-12 00:14:39,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:39,343 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:39,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:39,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:39,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1588355570, now seen corresponding path program 2 times [2023-11-12 00:14:39,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:39,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141570424] [2023-11-12 00:14:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:39,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:39,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924698167] [2023-11-12 00:14:39,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:14:39,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:39,606 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:39,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 00:14:39,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:14:39,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:14:39,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:39,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 00:14:39,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 00:14:40,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141570424] [2023-11-12 00:14:40,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924698167] [2023-11-12 00:14:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924698167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [370016368] [2023-11-12 00:14:40,003 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:14:40,003 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:40,003 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:40,004 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:40,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:40,604 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:41,217 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5091#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 2147483648 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-12 00:14:41,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:41,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 00:14:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645835794] [2023-11-12 00:14:41,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:41,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:14:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:14:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:14:41,221 INFO L87 Difference]: Start difference. First operand 391 states and 498 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:41,489 INFO L93 Difference]: Finished difference Result 604 states and 761 transitions. [2023-11-12 00:14:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:41,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-11-12 00:14:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:41,494 INFO L225 Difference]: With dead ends: 604 [2023-11-12 00:14:41,494 INFO L226 Difference]: Without dead ends: 601 [2023-11-12 00:14:41,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:14:41,496 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 149 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:41,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 31 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-12 00:14:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 579. [2023-11-12 00:14:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 569 states have (on average 1.2284710017574691) internal successors, (699), 578 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 699 transitions. [2023-11-12 00:14:41,535 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 699 transitions. Word has length 52 [2023-11-12 00:14:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:41,537 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 699 transitions. [2023-11-12 00:14:41,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 699 transitions. [2023-11-12 00:14:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:14:41,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:41,538 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:41,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:41,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 00:14:41,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:41,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1696314772, now seen corresponding path program 1 times [2023-11-12 00:14:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:41,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823547042] [2023-11-12 00:14:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:41,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075344517] [2023-11-12 00:14:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:41,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:41,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 00:14:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:41,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:14:41,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 32 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:42,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 32 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:42,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823547042] [2023-11-12 00:14:42,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075344517] [2023-11-12 00:14:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075344517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1475513884] [2023-11-12 00:14:42,221 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:14:42,221 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:42,221 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:42,221 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:42,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:42,819 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:43,324 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6837#(and (<= 0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)))' at error location [2023-11-12 00:14:43,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:43,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-12 00:14:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820596188] [2023-11-12 00:14:43,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:43,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 00:14:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 00:14:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-11-12 00:14:43,327 INFO L87 Difference]: Start difference. First operand 579 states and 699 transitions. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:43,844 INFO L93 Difference]: Finished difference Result 1822 states and 2295 transitions. [2023-11-12 00:14:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 00:14:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 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 54 [2023-11-12 00:14:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:43,852 INFO L225 Difference]: With dead ends: 1822 [2023-11-12 00:14:43,853 INFO L226 Difference]: Without dead ends: 1289 [2023-11-12 00:14:43,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 127 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2023-11-12 00:14:43,855 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 521 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:43,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 94 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:14:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-12 00:14:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1251. [2023-11-12 00:14:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1241 states have (on average 1.2111200644641418) internal successors, (1503), 1250 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1503 transitions. [2023-11-12 00:14:43,931 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1503 transitions. Word has length 54 [2023-11-12 00:14:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:43,933 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1503 transitions. [2023-11-12 00:14:43,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1503 transitions. [2023-11-12 00:14:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-12 00:14:43,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:43,936 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:43,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 00:14:44,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:44,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash -577468908, now seen corresponding path program 2 times [2023-11-12 00:14:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:44,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289595944] [2023-11-12 00:14:44,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:44,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:44,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39939803] [2023-11-12 00:14:44,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:14:44,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:44,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:44,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 00:14:44,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:14:44,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:14:44,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:44,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-11-12 00:14:44,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-11-12 00:14:44,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289595944] [2023-11-12 00:14:44,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39939803] [2023-11-12 00:14:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39939803] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385118097] [2023-11-12 00:14:44,833 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:14:44,833 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:44,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:44,834 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:44,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:45,303 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:45,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11089#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2147483648 (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 999) (= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2023-11-12 00:14:45,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:45,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 00:14:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522114388] [2023-11-12 00:14:45,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:14:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:14:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:14:45,951 INFO L87 Difference]: Start difference. First operand 1251 states and 1503 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:46,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:46,257 INFO L93 Difference]: Finished difference Result 1266 states and 1508 transitions. [2023-11-12 00:14:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:14:46,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 110 [2023-11-12 00:14:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:46,267 INFO L225 Difference]: With dead ends: 1266 [2023-11-12 00:14:46,267 INFO L226 Difference]: Without dead ends: 1264 [2023-11-12 00:14:46,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 301 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:14:46,270 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:46,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 21 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-12 00:14:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1251. [2023-11-12 00:14:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1241 states have (on average 1.2054794520547945) internal successors, (1496), 1250 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1496 transitions. [2023-11-12 00:14:46,342 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1496 transitions. Word has length 110 [2023-11-12 00:14:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1496 transitions. [2023-11-12 00:14:46,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1496 transitions. [2023-11-12 00:14:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-12 00:14:46,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:46,348 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:46,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 00:14:46,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:46,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 106909586, now seen corresponding path program 1 times [2023-11-12 00:14:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758817209] [2023-11-12 00:14:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:46,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074993691] [2023-11-12 00:14:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:46,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:46,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:46,577 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:46,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 00:14:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:46,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 00:14:46,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 173 proven. 651 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:14:47,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 173 proven. 651 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 00:14:47,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758817209] [2023-11-12 00:14:47,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074993691] [2023-11-12 00:14:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074993691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626052237] [2023-11-12 00:14:47,712 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-12 00:14:47,712 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:47,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:47,713 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:47,713 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:50,120 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:50,634 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14776#(and (<= 0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 2147483648 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)))' at error location [2023-11-12 00:14:50,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:50,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-11-12 00:14:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257130353] [2023-11-12 00:14:50,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:50,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-12 00:14:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-12 00:14:50,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1655, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 00:14:50,638 INFO L87 Difference]: Start difference. First operand 1251 states and 1496 transitions. Second operand has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 33 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:52,077 INFO L93 Difference]: Finished difference Result 3830 states and 4777 transitions. [2023-11-12 00:14:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-12 00:14:52,078 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 33 states have internal predecessors, (219), 0 states have call successors, (0), 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 121 [2023-11-12 00:14:52,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:52,094 INFO L225 Difference]: With dead ends: 3830 [2023-11-12 00:14:52,094 INFO L226 Difference]: Without dead ends: 2681 [2023-11-12 00:14:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1111, Invalid=2795, Unknown=0, NotChecked=0, Total=3906 [2023-11-12 00:14:52,098 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1774 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:52,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 182 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:14:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2023-11-12 00:14:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2595. [2023-11-12 00:14:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2595 states, 2585 states have (on average 1.2007736943907157) internal successors, (3104), 2594 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 3104 transitions. [2023-11-12 00:14:52,282 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 3104 transitions. Word has length 121 [2023-11-12 00:14:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:52,282 INFO L495 AbstractCegarLoop]: Abstraction has 2595 states and 3104 transitions. [2023-11-12 00:14:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.4411764705882355) internal successors, (219), 33 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 3104 transitions. [2023-11-12 00:14:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-12 00:14:52,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:52,288 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:52,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:52,497 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1142845806, now seen corresponding path program 2 times [2023-11-12 00:14:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150384856] [2023-11-12 00:14:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:52,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:52,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970261322] [2023-11-12 00:14:52,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:14:52,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:52,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:52,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:52,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-12 00:14:52,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:14:52,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:14:52,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:52,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3446 backedges. 244 proven. 124 refuted. 0 times theorem prover too weak. 3078 trivial. 0 not checked. [2023-11-12 00:14:52,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:14:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3446 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 3078 trivial. 0 not checked. [2023-11-12 00:14:53,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150384856] [2023-11-12 00:14:53,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970261322] [2023-11-12 00:14:53,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970261322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:14:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650352937] [2023-11-12 00:14:53,275 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-12 00:14:53,292 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:14:53,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:14:53,293 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:14:53,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:14:56,639 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:14:57,495 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23612#(and (<= 0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1|) 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)))' at error location [2023-11-12 00:14:57,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:14:57,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:14:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-12 00:14:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407427373] [2023-11-12 00:14:57,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:14:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:14:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:14:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:14:57,498 INFO L87 Difference]: Start difference. First operand 2595 states and 3104 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:57,947 INFO L93 Difference]: Finished difference Result 3897 states and 4680 transitions. [2023-11-12 00:14:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:57,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 233 [2023-11-12 00:14:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:57,969 INFO L225 Difference]: With dead ends: 3897 [2023-11-12 00:14:57,969 INFO L226 Difference]: Without dead ends: 3891 [2023-11-12 00:14:57,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 647 SyntacticMatches, 32 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-12 00:14:57,972 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:57,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:14:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2023-11-12 00:14:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3865. [2023-11-12 00:14:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3855 states have (on average 1.1037613488975357) internal successors, (4255), 3864 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 4255 transitions. [2023-11-12 00:14:58,175 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 4255 transitions. Word has length 233 [2023-11-12 00:14:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:58,176 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 4255 transitions. [2023-11-12 00:14:58,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 4255 transitions. [2023-11-12 00:14:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-11-12 00:14:58,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:58,182 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 45, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:58,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:58,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:14:58,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1461467445, now seen corresponding path program 1 times [2023-11-12 00:14:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704777057] [2023-11-12 00:14:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:58,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47449410] [2023-11-12 00:14:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:58,428 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:58,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-12 00:14:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:58,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-12 00:14:58,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7292 backedges. 3377 proven. 3075 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-11-12 00:14:59,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7292 backedges. 3377 proven. 3075 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-11-12 00:15:01,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704777057] [2023-11-12 00:15:01,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:15:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47449410] [2023-11-12 00:15:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47449410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213710855] [2023-11-12 00:15:01,326 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:15:01,326 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:15:01,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:15:01,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:15:01,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:15:01,658 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:15:02,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34596#(and (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (exists ((|v_#memory_int_183| (Array Int (Array Int Int)))) (= (store |v_#memory_int_183| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_183| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)) (+ |ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|))) |#memory_int|)) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-11-12 00:15:02,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:15:02,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:15:02,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2023-11-12 00:15:02,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441596135] [2023-11-12 00:15:02,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:15:02,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-12 00:15:02,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-12 00:15:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2198, Invalid=3502, Unknown=0, NotChecked=0, Total=5700 [2023-11-12 00:15:02,835 INFO L87 Difference]: Start difference. First operand 3865 states and 4255 transitions. Second operand has 66 states, 66 states have (on average 6.651515151515151) internal successors, (439), 65 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:07,291 INFO L93 Difference]: Finished difference Result 11730 states and 13479 transitions. [2023-11-12 00:15:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-12 00:15:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 6.651515151515151) internal successors, (439), 65 states have internal predecessors, (439), 0 states have call successors, (0), 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 329 [2023-11-12 00:15:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:07,330 INFO L225 Difference]: With dead ends: 11730 [2023-11-12 00:15:07,330 INFO L226 Difference]: Without dead ends: 8079 [2023-11-12 00:15:07,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 865 SyntacticMatches, 46 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9236 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4276, Invalid=7066, Unknown=0, NotChecked=0, Total=11342 [2023-11-12 00:15:07,339 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2203 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:07,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2203 Valid, 334 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:15:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8079 states. [2023-11-12 00:15:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8079 to 7897. [2023-11-12 00:15:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7887 states have (on average 1.099404082667681) internal successors, (8671), 7896 states have internal predecessors, (8671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 8671 transitions. [2023-11-12 00:15:07,811 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 8671 transitions. Word has length 329 [2023-11-12 00:15:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:07,812 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 8671 transitions. [2023-11-12 00:15:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 6.651515151515151) internal successors, (439), 65 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 8671 transitions. [2023-11-12 00:15:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-12 00:15:07,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:07,830 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 93, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:07,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 00:15:08,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:15:08,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -747359797, now seen corresponding path program 2 times [2023-11-12 00:15:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620236950] [2023-11-12 00:15:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:08,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:15:08,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903813234] [2023-11-12 00:15:08,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:15:08,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:08,118 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:08,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-12 00:15:08,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:15:08,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:15:08,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:15:08,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30692 backedges. 0 proven. 558 refuted. 0 times theorem prover too weak. 30134 trivial. 0 not checked. [2023-11-12 00:15:09,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30692 backedges. 0 proven. 558 refuted. 0 times theorem prover too weak. 30134 trivial. 0 not checked. [2023-11-12 00:15:09,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:09,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620236950] [2023-11-12 00:15:09,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:15:09,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903813234] [2023-11-12 00:15:09,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903813234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:09,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139578634] [2023-11-12 00:15:09,991 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:15:09,991 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:15:09,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:15:09,992 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:15:09,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:15:10,356 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:15:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2139578634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:10,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:15:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [2, 2] total 15 [2023-11-12 00:15:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834811021] [2023-11-12 00:15:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:15:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:15:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:15:10,746 INFO L87 Difference]: Start difference. First operand 7897 states and 8671 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:11,278 INFO L93 Difference]: Finished difference Result 7899 states and 8671 transitions. [2023-11-12 00:15:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:15:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 665 [2023-11-12 00:15:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:11,311 INFO L225 Difference]: With dead ends: 7899 [2023-11-12 00:15:11,312 INFO L226 Difference]: Without dead ends: 7898 [2023-11-12 00:15:11,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1995 GetRequests, 1978 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:15:11,314 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:11,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:15:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2023-11-12 00:15:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7897. [2023-11-12 00:15:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7897 states, 7887 states have (on average 1.091543045517941) internal successors, (8609), 7896 states have internal predecessors, (8609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7897 states to 7897 states and 8609 transitions. [2023-11-12 00:15:11,721 INFO L78 Accepts]: Start accepts. Automaton has 7897 states and 8609 transitions. Word has length 665 [2023-11-12 00:15:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:11,722 INFO L495 AbstractCegarLoop]: Abstraction has 7897 states and 8609 transitions. [2023-11-12 00:15:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7897 states and 8609 transitions. [2023-11-12 00:15:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-11-12 00:15:11,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:11,761 INFO L195 NwaCegarLoop]: trace histogram [124, 124, 124, 124, 124, 124, 124, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-12 00:15:11,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-12 00:15:11,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:11,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-12 00:15:11,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1363173837, now seen corresponding path program 1 times [2023-11-12 00:15:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:11,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866452534] [2023-11-12 00:15:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:11,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:12,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:15:12,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531544562] [2023-11-12 00:15:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:12,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:12,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:12,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_246f3944-999c-46f6-93eb-fd9f28ddbd47/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-12 00:15:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:12,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-12 00:15:12,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 53642 backedges. 27037 proven. 13299 refuted. 0 times theorem prover too weak. 13306 trivial. 0 not checked. [2023-11-12 00:15:15,917 INFO L327 TraceCheckSpWp]: Computing backward predicates...