./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:51,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:51,618 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-31 21:58:51,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:51,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:51,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:51,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:51,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:51,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:51,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:51,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:51,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:51,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:51,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:51,699 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:51,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:51,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:51,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:51,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:51,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:51,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:51,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:51,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:51,702 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:58:51,704 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:58:51,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:51,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:51,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:51,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:51,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:51,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:51,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:51,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:51,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:51,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:51,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:51,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:51,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:51,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:51,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:51,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:51,712 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2024-10-31 21:58:52,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:52,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:52,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:52,105 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:52,107 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:52,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c Unable to find full path for "g++" [2024-10-31 21:58:54,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:54,583 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:54,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2024-10-31 21:58:54,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/data/10779ccea/ca4bdd505a50416eafe079bdcc80d973/FLAG95809b5ca [2024-10-31 21:58:54,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/data/10779ccea/ca4bdd505a50416eafe079bdcc80d973 [2024-10-31 21:58:54,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:54,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:54,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:54,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:54,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:54,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:54,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ce2284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54, skipping insertion in model container [2024-10-31 21:58:54,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:54,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:54,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:54,918 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:54,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:54,955 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:54,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54 WrapperNode [2024-10-31 21:58:54,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:54,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:54,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:54,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:54,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:54,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:54,989 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-10-31 21:58:54,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:54,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:54,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:54,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:55,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,016 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 21:58:55,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:55,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:55,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:55,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:55,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (1/1) ... [2024-10-31 21:58:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:55,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:55,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-10-31 21:58:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-10-31 21:58:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:55,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:55,182 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:55,185 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:55,336 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-31 21:58:55,337 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:55,361 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:55,365 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:58:55,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:55 BoogieIcfgContainer [2024-10-31 21:58:55,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:55,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:55,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:55,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:55,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:54" (1/3) ... [2024-10-31 21:58:55,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb246e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:55, skipping insertion in model container [2024-10-31 21:58:55,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:54" (2/3) ... [2024-10-31 21:58:55,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb246e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:55, skipping insertion in model container [2024-10-31 21:58:55,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:55" (3/3) ... [2024-10-31 21:58:55,380 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2024-10-31 21:58:55,402 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:55,402 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-31 21:58:55,478 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:55,489 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, 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;@23be9e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:55,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:58:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 21:58:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 21:58:55,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:55,512 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:55,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:55,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2024-10-31 21:58:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260863581] [2024-10-31 21:58:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260863581] [2024-10-31 21:58:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260863581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:55,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:55,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416259427] [2024-10-31 21:58:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:55,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:55,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:55,821 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:55,952 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-10-31 21:58:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 21:58:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:55,965 INFO L225 Difference]: With dead ends: 47 [2024-10-31 21:58:55,965 INFO L226 Difference]: Without dead ends: 29 [2024-10-31 21:58:55,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:55,975 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:55,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-31 21:58:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-10-31 21:58:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-10-31 21:58:56,015 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-10-31 21:58:56,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:56,017 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-10-31 21:58:56,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-10-31 21:58:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 21:58:56,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:56,019 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:56,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:56,020 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:56,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2024-10-31 21:58:56,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534741984] [2024-10-31 21:58:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534741984] [2024-10-31 21:58:56,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534741984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238065328] [2024-10-31 21:58:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:56,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:56,114 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:56,185 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-31 21:58:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 21:58:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:56,188 INFO L225 Difference]: With dead ends: 29 [2024-10-31 21:58:56,188 INFO L226 Difference]: Without dead ends: 28 [2024-10-31 21:58:56,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:56,191 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:56,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-31 21:58:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-31 21:58:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-31 21:58:56,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2024-10-31 21:58:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:56,202 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-31 21:58:56,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-31 21:58:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 21:58:56,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:56,204 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:56,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:56,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:56,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:56,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2024-10-31 21:58:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:56,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146804285] [2024-10-31 21:58:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146804285] [2024-10-31 21:58:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146804285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:56,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:56,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:56,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271096313] [2024-10-31 21:58:56,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:56,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:56,342 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:56,410 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-10-31 21:58:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:56,411 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-31 21:58:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:56,412 INFO L225 Difference]: With dead ends: 35 [2024-10-31 21:58:56,412 INFO L226 Difference]: Without dead ends: 34 [2024-10-31 21:58:56,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:56,414 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:56,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:58:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-31 21:58:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-10-31 21:58:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-31 21:58:56,422 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2024-10-31 21:58:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:56,423 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-31 21:58:56,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-31 21:58:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 21:58:56,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:56,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:56,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:56,424 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:56,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2024-10-31 21:58:56,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070662148] [2024-10-31 21:58:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070662148] [2024-10-31 21:58:56,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070662148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:56,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:56,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:58:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821457277] [2024-10-31 21:58:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:56,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:56,534 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:56,600 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-10-31 21:58:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:56,601 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-31 21:58:56,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:56,603 INFO L225 Difference]: With dead ends: 33 [2024-10-31 21:58:56,607 INFO L226 Difference]: Without dead ends: 32 [2024-10-31 21:58:56,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:56,608 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:56,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:58:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-31 21:58:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-10-31 21:58:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-10-31 21:58:56,623 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2024-10-31 21:58:56,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:56,623 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-10-31 21:58:56,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-10-31 21:58:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 21:58:56,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:56,625 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:56,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:56,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:56,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2024-10-31 21:58:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:56,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615346769] [2024-10-31 21:58:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:56,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615346769] [2024-10-31 21:58:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615346769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017550840] [2024-10-31 21:58:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:56,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:56,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:56,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:56,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:56,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:56,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017550840] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:56,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 21:58:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172423884] [2024-10-31 21:58:56,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:56,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:58:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:58:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:56,973 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:57,131 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-10-31 21:58:57,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:58:57,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 21:58:57,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:57,133 INFO L225 Difference]: With dead ends: 66 [2024-10-31 21:58:57,134 INFO L226 Difference]: Without dead ends: 65 [2024-10-31 21:58:57,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:58:57,141 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:57,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 106 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-31 21:58:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2024-10-31 21:58:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-10-31 21:58:57,151 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2024-10-31 21:58:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:57,152 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-10-31 21:58:57,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-10-31 21:58:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 21:58:57,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:57,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:57,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:57,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:57,355 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:57,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2024-10-31 21:58:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:57,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748143874] [2024-10-31 21:58:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748143874] [2024-10-31 21:58:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748143874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310384562] [2024-10-31 21:58:57,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:57,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:57,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:57,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:57,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:58:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:57,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:58:57,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:57,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310384562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:57,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-31 21:58:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344272793] [2024-10-31 21:58:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:57,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:57,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:58:57,602 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:57,729 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-10-31 21:58:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:57,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 21:58:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:57,732 INFO L225 Difference]: With dead ends: 60 [2024-10-31 21:58:57,732 INFO L226 Difference]: Without dead ends: 59 [2024-10-31 21:58:57,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:57,733 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:57,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:58:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-31 21:58:57,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-10-31 21:58:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-10-31 21:58:57,745 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2024-10-31 21:58:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:57,745 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-10-31 21:58:57,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-10-31 21:58:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 21:58:57,746 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:57,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:57,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:57,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 21:58:57,948 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:57,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2024-10-31 21:58:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:57,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436377225] [2024-10-31 21:58:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436377225] [2024-10-31 21:58:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436377225] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597516075] [2024-10-31 21:58:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:58,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:58,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:58,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:58:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:58,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:58,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:58,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597516075] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:58,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 21:58:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189675011] [2024-10-31 21:58:58,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:58,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:58:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:58:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:58,239 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:58,585 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-10-31 21:58:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:58:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 21:58:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:58,586 INFO L225 Difference]: With dead ends: 101 [2024-10-31 21:58:58,587 INFO L226 Difference]: Without dead ends: 99 [2024-10-31 21:58:58,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-10-31 21:58:58,592 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:58,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 102 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:58:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-31 21:58:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2024-10-31 21:58:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 62 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2024-10-31 21:58:58,619 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2024-10-31 21:58:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:58,619 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2024-10-31 21:58:58,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2024-10-31 21:58:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 21:58:58,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:58,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:58,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:58:58,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:58,821 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:58,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2024-10-31 21:58:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615013168] [2024-10-31 21:58:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:58,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615013168] [2024-10-31 21:58:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615013168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700055720] [2024-10-31 21:58:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:58,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:58,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:58,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:58:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:58,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:58,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:58,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:59,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700055720] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:59,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 21:58:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058972891] [2024-10-31 21:58:59,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:59,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:58:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:58:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:58:59,111 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:59,551 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2024-10-31 21:58:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 21:58:59,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 21:58:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:58:59,554 INFO L225 Difference]: With dead ends: 117 [2024-10-31 21:58:59,554 INFO L226 Difference]: Without dead ends: 115 [2024-10-31 21:58:59,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-10-31 21:58:59,556 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:58:59,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:58:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-31 21:58:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2024-10-31 21:58:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2024-10-31 21:58:59,592 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2024-10-31 21:58:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:58:59,592 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2024-10-31 21:58:59,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2024-10-31 21:58:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-31 21:58:59,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:58:59,593 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:59,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:58:59,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 21:58:59,794 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:58:59,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2024-10-31 21:58:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:59,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479966337] [2024-10-31 21:58:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:59,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:59,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:59,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479966337] [2024-10-31 21:58:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479966337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275332236] [2024-10-31 21:58:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:59,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:59,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:59,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:58:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:59,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:58:59,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:59,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:59,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275332236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:59,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:59,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-31 21:58:59,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781812676] [2024-10-31 21:58:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:59,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:59,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:59,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:58:59,987 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:00,062 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2024-10-31 21:59:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:59:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-31 21:59:00,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:00,064 INFO L225 Difference]: With dead ends: 102 [2024-10-31 21:59:00,064 INFO L226 Difference]: Without dead ends: 101 [2024-10-31 21:59:00,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:59:00,065 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:00,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:59:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-31 21:59:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-10-31 21:59:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 79 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2024-10-31 21:59:00,082 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2024-10-31 21:59:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:00,082 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2024-10-31 21:59:00,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2024-10-31 21:59:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-31 21:59:00,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:00,083 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:00,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 21:59:00,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:00,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:00,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2024-10-31 21:59:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787137722] [2024-10-31 21:59:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:00,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787137722] [2024-10-31 21:59:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787137722] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301426820] [2024-10-31 21:59:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:00,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:00,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:59:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:00,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:59:00,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:00,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:59:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301426820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:00,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:59:00,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-31 21:59:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358126084] [2024-10-31 21:59:00,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:00,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:59:00,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:59:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:59:00,481 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:00,564 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2024-10-31 21:59:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:59:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-31 21:59:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:00,565 INFO L225 Difference]: With dead ends: 98 [2024-10-31 21:59:00,567 INFO L226 Difference]: Without dead ends: 97 [2024-10-31 21:59:00,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:59:00,570 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:00,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:59:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-31 21:59:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2024-10-31 21:59:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-10-31 21:59:00,599 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 15 [2024-10-31 21:59:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:00,600 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-10-31 21:59:00,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-10-31 21:59:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-31 21:59:00,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:00,601 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:00,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:00,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 21:59:00,802 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:00,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2024-10-31 21:59:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:00,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035215777] [2024-10-31 21:59:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035215777] [2024-10-31 21:59:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035215777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993470068] [2024-10-31 21:59:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:00,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:00,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 21:59:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:00,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:59:00,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:00,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993470068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:01,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 21:59:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615611326] [2024-10-31 21:59:01,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:01,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:59:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:59:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:59:01,068 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:01,244 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-10-31 21:59:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:59:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-31 21:59:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:01,247 INFO L225 Difference]: With dead ends: 86 [2024-10-31 21:59:01,248 INFO L226 Difference]: Without dead ends: 85 [2024-10-31 21:59:01,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:59:01,249 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:01,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 48 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-31 21:59:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2024-10-31 21:59:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-10-31 21:59:01,263 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2024-10-31 21:59:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:01,264 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-10-31 21:59:01,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-10-31 21:59:01,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 21:59:01,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:01,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:01,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:01,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-31 21:59:01,467 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:01,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2024-10-31 21:59:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:01,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823839785] [2024-10-31 21:59:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:01,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:01,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823839785] [2024-10-31 21:59:01,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823839785] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651930200] [2024-10-31 21:59:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:01,616 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:01,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 21:59:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:01,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:01,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:01,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651930200] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:01,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:01,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-10-31 21:59:01,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105351840] [2024-10-31 21:59:01,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:01,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 21:59:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 21:59:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-10-31 21:59:01,983 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:02,758 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2024-10-31 21:59:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-31 21:59:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-31 21:59:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:02,760 INFO L225 Difference]: With dead ends: 151 [2024-10-31 21:59:02,760 INFO L226 Difference]: Without dead ends: 149 [2024-10-31 21:59:02,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 21:59:02,762 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 275 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:02,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 76 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:59:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-31 21:59:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2024-10-31 21:59:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-10-31 21:59:02,777 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 26 [2024-10-31 21:59:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:02,778 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-10-31 21:59:02,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-10-31 21:59:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 21:59:02,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:02,779 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:02,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-31 21:59:02,984 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:02,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 1 times [2024-10-31 21:59:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:02,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201577250] [2024-10-31 21:59:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:03,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201577250] [2024-10-31 21:59:03,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201577250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:03,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937966783] [2024-10-31 21:59:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:03,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:03,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:03,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 21:59:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:03,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:03,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:03,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937966783] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:03,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-10-31 21:59:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470864348] [2024-10-31 21:59:03,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:03,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 21:59:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 21:59:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-10-31 21:59:03,472 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:04,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:04,282 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-10-31 21:59:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-31 21:59:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-31 21:59:04,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:04,284 INFO L225 Difference]: With dead ends: 195 [2024-10-31 21:59:04,284 INFO L226 Difference]: Without dead ends: 193 [2024-10-31 21:59:04,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2024-10-31 21:59:04,286 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 129 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:04,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 114 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-31 21:59:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 119. [2024-10-31 21:59:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2024-10-31 21:59:04,310 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 26 [2024-10-31 21:59:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:04,310 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2024-10-31 21:59:04,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2024-10-31 21:59:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 21:59:04,312 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:04,312 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 21:59:04,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 21:59:04,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:04,513 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:04,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1894821127, now seen corresponding path program 2 times [2024-10-31 21:59:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426287186] [2024-10-31 21:59:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:04,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:04,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426287186] [2024-10-31 21:59:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426287186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816814385] [2024-10-31 21:59:04,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:04,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:04,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:04,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 21:59:04,898 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:04,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:04,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:04,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:05,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816814385] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:05,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:05,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 29 [2024-10-31 21:59:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486559877] [2024-10-31 21:59:05,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:05,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-31 21:59:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-31 21:59:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2024-10-31 21:59:05,419 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:07,002 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2024-10-31 21:59:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-31 21:59:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-31 21:59:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:07,004 INFO L225 Difference]: With dead ends: 263 [2024-10-31 21:59:07,004 INFO L226 Difference]: Without dead ends: 261 [2024-10-31 21:59:07,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1149, Invalid=5013, Unknown=0, NotChecked=0, Total=6162 [2024-10-31 21:59:07,008 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 382 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:07,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 137 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:59:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-10-31 21:59:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2024-10-31 21:59:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-10-31 21:59:07,039 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2024-10-31 21:59:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:07,040 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-10-31 21:59:07,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-10-31 21:59:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 21:59:07,041 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:07,042 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 21:59:07,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-31 21:59:07,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-31 21:59:07,250 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:07,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash 28164967, now seen corresponding path program 2 times [2024-10-31 21:59:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045214490] [2024-10-31 21:59:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 21:59:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045214490] [2024-10-31 21:59:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045214490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340407303] [2024-10-31 21:59:07,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:07,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:07,395 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:07,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 21:59:07,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:07,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:07,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:07,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 21:59:07,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 21:59:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340407303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:07,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:07,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2024-10-31 21:59:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453749579] [2024-10-31 21:59:07,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:07,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 21:59:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 21:59:07,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-10-31 21:59:07,850 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:08,482 INFO L93 Difference]: Finished difference Result 406 states and 473 transitions. [2024-10-31 21:59:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-31 21:59:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-31 21:59:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:08,484 INFO L225 Difference]: With dead ends: 406 [2024-10-31 21:59:08,484 INFO L226 Difference]: Without dead ends: 330 [2024-10-31 21:59:08,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-10-31 21:59:08,487 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 130 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:08,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 122 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-31 21:59:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 260. [2024-10-31 21:59:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 219 states have internal predecessors, (250), 44 states have call successors, (44), 40 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 294 transitions. [2024-10-31 21:59:08,540 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 294 transitions. Word has length 38 [2024-10-31 21:59:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:08,540 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 294 transitions. [2024-10-31 21:59:08,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 294 transitions. [2024-10-31 21:59:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 21:59:08,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:08,542 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:08,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-31 21:59:08,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:08,746 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:08,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 917101277, now seen corresponding path program 2 times [2024-10-31 21:59:08,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501942241] [2024-10-31 21:59:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:09,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501942241] [2024-10-31 21:59:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501942241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:09,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96781949] [2024-10-31 21:59:09,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:09,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:09,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:09,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 21:59:09,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:09,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:09,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:09,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:09,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:09,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96781949] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:09,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:09,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-10-31 21:59:09,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235419673] [2024-10-31 21:59:09,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:09,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 21:59:09,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 21:59:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-10-31 21:59:09,479 INFO L87 Difference]: Start difference. First operand 260 states and 294 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:10,685 INFO L93 Difference]: Finished difference Result 582 states and 644 transitions. [2024-10-31 21:59:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-31 21:59:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-31 21:59:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:10,688 INFO L225 Difference]: With dead ends: 582 [2024-10-31 21:59:10,688 INFO L226 Difference]: Without dead ends: 580 [2024-10-31 21:59:10,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=981, Invalid=4275, Unknown=0, NotChecked=0, Total=5256 [2024-10-31 21:59:10,691 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 462 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:10,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 128 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-10-31 21:59:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 301. [2024-10-31 21:59:10,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 248 states have (on average 1.1733870967741935) internal successors, (291), 253 states have internal predecessors, (291), 51 states have call successors, (51), 47 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 342 transitions. [2024-10-31 21:59:10,751 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 342 transitions. Word has length 38 [2024-10-31 21:59:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:10,751 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 342 transitions. [2024-10-31 21:59:10,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 342 transitions. [2024-10-31 21:59:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-31 21:59:10,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:10,753 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 21:59:10,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:10,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:10,957 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:10,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1885503363, now seen corresponding path program 3 times [2024-10-31 21:59:10,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:10,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822750698] [2024-10-31 21:59:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 68 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-31 21:59:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822750698] [2024-10-31 21:59:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822750698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541400303] [2024-10-31 21:59:11,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:59:11,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:11,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:11,181 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:11,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 21:59:11,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-31 21:59:11,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:11,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:59:11,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 21:59:11,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-31 21:59:11,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541400303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:11,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:11,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-10-31 21:59:11,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678448954] [2024-10-31 21:59:11,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:11,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 21:59:11,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 21:59:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-31 21:59:11,312 INFO L87 Difference]: Start difference. First operand 301 states and 342 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:11,558 INFO L93 Difference]: Finished difference Result 334 states and 380 transitions. [2024-10-31 21:59:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:59:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-31 21:59:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:11,560 INFO L225 Difference]: With dead ends: 334 [2024-10-31 21:59:11,560 INFO L226 Difference]: Without dead ends: 142 [2024-10-31 21:59:11,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-10-31 21:59:11,562 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:11,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-31 21:59:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2024-10-31 21:59:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2024-10-31 21:59:11,590 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 50 [2024-10-31 21:59:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:11,590 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2024-10-31 21:59:11,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2024-10-31 21:59:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 21:59:11,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:11,591 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:11,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:11,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:11,792 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:11,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1446440850, now seen corresponding path program 4 times [2024-10-31 21:59:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130926089] [2024-10-31 21:59:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:12,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:12,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130926089] [2024-10-31 21:59:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130926089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376435310] [2024-10-31 21:59:12,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:59:12,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:12,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:12,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-31 21:59:12,299 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:59:12,299 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:12,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-31 21:59:12,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:12,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376435310] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:12,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-10-31 21:59:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755887620] [2024-10-31 21:59:12,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:12,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-31 21:59:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:12,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-31 21:59:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-10-31 21:59:12,996 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:15,135 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2024-10-31 21:59:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-10-31 21:59:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-31 21:59:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:15,137 INFO L225 Difference]: With dead ends: 247 [2024-10-31 21:59:15,137 INFO L226 Difference]: Without dead ends: 246 [2024-10-31 21:59:15,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2251, Invalid=9739, Unknown=0, NotChecked=0, Total=11990 [2024-10-31 21:59:15,141 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 692 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:15,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 91 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-10-31 21:59:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2024-10-31 21:59:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 198 states have (on average 1.0303030303030303) internal successors, (204), 198 states have internal predecessors, (204), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 243 transitions. [2024-10-31 21:59:15,185 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 243 transitions. Word has length 62 [2024-10-31 21:59:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:15,185 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 243 transitions. [2024-10-31 21:59:15,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 243 transitions. [2024-10-31 21:59:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 21:59:15,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:15,187 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-10-31 21:59:15,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:15,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:15,388 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:15,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2024-10-31 21:59:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:15,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062455394] [2024-10-31 21:59:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062455394] [2024-10-31 21:59:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062455394] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671323728] [2024-10-31 21:59:16,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:16,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:16,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:16,247 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:16,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 21:59:16,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:16,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:16,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-31 21:59:16,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:16,463 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:16,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:17,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671323728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:17,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-10-31 21:59:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592548184] [2024-10-31 21:59:17,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:17,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-31 21:59:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-31 21:59:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-10-31 21:59:17,494 INFO L87 Difference]: Start difference. First operand 238 states and 243 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:18,901 INFO L93 Difference]: Finished difference Result 279 states and 286 transitions. [2024-10-31 21:59:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-31 21:59:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-31 21:59:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:18,903 INFO L225 Difference]: With dead ends: 279 [2024-10-31 21:59:18,903 INFO L226 Difference]: Without dead ends: 278 [2024-10-31 21:59:18,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1323, Invalid=7419, Unknown=0, NotChecked=0, Total=8742 [2024-10-31 21:59:18,909 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 416 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:18,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 168 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-10-31 21:59:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-10-31 21:59:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2024-10-31 21:59:19,012 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 80 [2024-10-31 21:59:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:19,012 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2024-10-31 21:59:19,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2024-10-31 21:59:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-31 21:59:19,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:19,014 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:19,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-31 21:59:19,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:19,219 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:19,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash -168402537, now seen corresponding path program 5 times [2024-10-31 21:59:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523901799] [2024-10-31 21:59:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523901799] [2024-10-31 21:59:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523901799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588416318] [2024-10-31 21:59:20,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 21:59:20,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:20,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:20,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa6f5c0e-8802-4786-b166-d85dd4c8a3b8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-31 21:59:20,756 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-10-31 21:59:20,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:20,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-31 21:59:20,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:21,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:22,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588416318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:22,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:22,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-10-31 21:59:22,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445124831] [2024-10-31 21:59:22,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:22,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-31 21:59:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-31 21:59:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2024-10-31 21:59:22,658 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)