./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya --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 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:30:54,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:30:54,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:30:54,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:30:54,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:30:54,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:30:54,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:30:54,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:30:54,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:30:54,701 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:30:54,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:30:54,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:30:54,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:30:54,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:30:54,704 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:30:54,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:30:54,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:30:54,705 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:30:54,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:30:54,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:30:54,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:30:54,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:30:54,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:30:54,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:30:54,709 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:30:54,709 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:30:54,709 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:30:54,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:30:54,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:30:54,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:30:54,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:30:54,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:30:54,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:30:54,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:54,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:30:54,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:30:54,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:30:54,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:30:54,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:30:54,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:30:54,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:30:54,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:30:54,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:30:54,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:30:54,715 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_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-11-29 01:30:54,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:30:54,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:30:54,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:30:54,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:30:54,995 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:30:54,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-11-29 01:30:57,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:30:58,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:30:58,128 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-11-29 01:30:58,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/data/1e6b7c5a7/1dc1e6932a4f4d8e83f5f47087cc4f3e/FLAG6441aa88c [2023-11-29 01:30:58,154 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/data/1e6b7c5a7/1dc1e6932a4f4d8e83f5f47087cc4f3e [2023-11-29 01:30:58,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:30:58,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:30:58,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:58,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:30:58,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:30:58,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2ac411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58, skipping insertion in model container [2023-11-29 01:30:58,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:30:58,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:58,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:30:58,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:58,432 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:30:58,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58 WrapperNode [2023-11-29 01:30:58,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:58,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:58,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:30:58,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:30:58,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,472 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-11-29 01:30:58,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:58,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:30:58,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:30:58,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:30:58,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,503 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:30:58,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:30:58,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:30:58,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:30:58,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:30:58,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (1/1) ... [2023-11-29 01:30:58,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:58,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:58,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:30:58,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:30:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:30:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-11-29 01:30:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-11-29 01:30:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:30:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:30:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:30:58,698 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:30:58,701 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:30:58,876 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:30:58,902 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:30:58,903 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:30:58,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:58 BoogieIcfgContainer [2023-11-29 01:30:58,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:30:58,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:30:58,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:30:58,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:30:58,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:30:58" (1/3) ... [2023-11-29 01:30:58,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37872fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:58, skipping insertion in model container [2023-11-29 01:30:58,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:58" (2/3) ... [2023-11-29 01:30:58,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37872fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:58, skipping insertion in model container [2023-11-29 01:30:58,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:58" (3/3) ... [2023-11-29 01:30:58,915 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-11-29 01:30:58,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:30:58,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 01:30:58,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:30:59,006 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@1071cbe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:30:59,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 01:30:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:30:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:30:59,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:59,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:30:59,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash -604882678, now seen corresponding path program 1 times [2023-11-29 01:30:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870892998] [2023-11-29 01:30:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:59,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:59,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870892998] [2023-11-29 01:30:59,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870892998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:59,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:59,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:30:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060129322] [2023-11-29 01:30:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:59,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:30:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:30:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:59,302 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 01:30:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:59,368 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-11-29 01:30:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:30:59,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2023-11-29 01:30:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:59,382 INFO L225 Difference]: With dead ends: 35 [2023-11-29 01:30:59,382 INFO L226 Difference]: Without dead ends: 28 [2023-11-29 01:30:59,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:30:59,391 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:59,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:30:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-29 01:30:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-29 01:30:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 01:30:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-29 01:30:59,439 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-29 01:30:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:59,440 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-29 01:30:59,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 01:30:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-29 01:30:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:30:59,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:30:59,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:30:59,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1571493797, now seen corresponding path program 1 times [2023-11-29 01:30:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837423031] [2023-11-29 01:30:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837423031] [2023-11-29 01:30:59,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837423031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:30:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198108110] [2023-11-29 01:30:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:30:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:30:59,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:30:59,558 INFO L87 Difference]: Start difference. First operand 26 states and 30 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) [2023-11-29 01:30:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:59,674 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2023-11-29 01:30:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:30:59,675 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 [2023-11-29 01:30:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:59,677 INFO L225 Difference]: With dead ends: 63 [2023-11-29 01:30:59,677 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 01:30:59,679 INFO L412 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 [2023-11-29 01:30:59,681 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:59,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:30:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 01:30:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2023-11-29 01:30:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.4) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:30:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-29 01:30:59,696 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 8 [2023-11-29 01:30:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:59,697 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-29 01:30:59,697 INFO L496 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) [2023-11-29 01:30:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-29 01:30:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:30:59,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:30:59,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:30:59,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1471449938, now seen corresponding path program 1 times [2023-11-29 01:30:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457346429] [2023-11-29 01:30:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:30:59,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:59,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457346429] [2023-11-29 01:30:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457346429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:30:59,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:30:59,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:30:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179215512] [2023-11-29 01:30:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:30:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:30:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:30:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:30:59,843 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-29 01:30:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:59,945 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2023-11-29 01:30:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:30:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) 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 [2023-11-29 01:30:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:59,948 INFO L225 Difference]: With dead ends: 57 [2023-11-29 01:30:59,948 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 01:30:59,949 INFO L412 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 [2023-11-29 01:30:59,951 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:59,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 62 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:30:59,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 01:30:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2023-11-29 01:30:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 41 states have internal predecessors, (51), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:30:59,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-29 01:30:59,968 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 9 [2023-11-29 01:30:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:59,968 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-29 01:30:59,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) 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) [2023-11-29 01:30:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-29 01:30:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:30:59,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,970 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:30:59,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:30:59,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -293574578, now seen corresponding path program 1 times [2023-11-29 01:30:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771122487] [2023-11-29 01:30:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771122487] [2023-11-29 01:31:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771122487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320340137] [2023-11-29 01:31:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:00,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:00,077 INFO L87 Difference]: Start difference. First operand 51 states and 64 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) [2023-11-29 01:31:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:00,184 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2023-11-29 01:31:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:00,186 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 [2023-11-29 01:31:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:00,188 INFO L225 Difference]: With dead ends: 76 [2023-11-29 01:31:00,188 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 01:31:00,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:00,191 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:00,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 62 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:00,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 01:31:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2023-11-29 01:31:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 53 states have internal predecessors, (67), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 01:31:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2023-11-29 01:31:00,213 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 14 [2023-11-29 01:31:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:00,213 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-11-29 01:31:00,214 INFO L496 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) [2023-11-29 01:31:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2023-11-29 01:31:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:31:00,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:00,215 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:31:00,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:00,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2008002200, now seen corresponding path program 1 times [2023-11-29 01:31:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495117464] [2023-11-29 01:31:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495117464] [2023-11-29 01:31:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495117464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:00,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949761735] [2023-11-29 01:31:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:00,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:00,318 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:31:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:00,397 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2023-11-29 01:31:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:00,399 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-29 01:31:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:00,402 INFO L225 Difference]: With dead ends: 120 [2023-11-29 01:31:00,402 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 01:31:00,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:00,405 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:00,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 86 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:31:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 01:31:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2023-11-29 01:31:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 60 states have internal predecessors, (77), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2023-11-29 01:31:00,428 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 15 [2023-11-29 01:31:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:00,429 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2023-11-29 01:31:00,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:31:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2023-11-29 01:31:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:31:00,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:00,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:00,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:31:00,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:00,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2118308543, now seen corresponding path program 1 times [2023-11-29 01:31:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:00,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316412258] [2023-11-29 01:31:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316412258] [2023-11-29 01:31:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316412258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967443806] [2023-11-29 01:31:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:00,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:00,521 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:31:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:00,607 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2023-11-29 01:31:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:31:00,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-29 01:31:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:00,611 INFO L225 Difference]: With dead ends: 101 [2023-11-29 01:31:00,611 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 01:31:00,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:00,614 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 27 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:00,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 99 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 01:31:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2023-11-29 01:31:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 72 states have internal predecessors, (92), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 01:31:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2023-11-29 01:31:00,638 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 16 [2023-11-29 01:31:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:00,639 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2023-11-29 01:31:00,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:31:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2023-11-29 01:31:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:31:00,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:00,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:00,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:31:00,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1118423909, now seen corresponding path program 1 times [2023-11-29 01:31:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121907302] [2023-11-29 01:31:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:31:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121907302] [2023-11-29 01:31:00,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121907302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463373816] [2023-11-29 01:31:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:00,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:00,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:31:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:00,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:01,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463373816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:01,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:01,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-11-29 01:31:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675229771] [2023-11-29 01:31:01,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:01,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:31:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:01,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:31:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:31:01,003 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:01,170 INFO L93 Difference]: Finished difference Result 151 states and 200 transitions. [2023-11-29 01:31:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:31:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-29 01:31:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:01,174 INFO L225 Difference]: With dead ends: 151 [2023-11-29 01:31:01,174 INFO L226 Difference]: Without dead ends: 150 [2023-11-29 01:31:01,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:31:01,177 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:01,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 125 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-29 01:31:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 120. [2023-11-29 01:31:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 96 states have internal predecessors, (123), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:31:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2023-11-29 01:31:01,223 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 17 [2023-11-29 01:31:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:01,223 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2023-11-29 01:31:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2023-11-29 01:31:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:31:01,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:01,226 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:01,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:31:01,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 592873900, now seen corresponding path program 1 times [2023-11-29 01:31:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870521206] [2023-11-29 01:31:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:31:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870521206] [2023-11-29 01:31:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870521206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784705471] [2023-11-29 01:31:01,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:01,499 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:01,572 INFO L93 Difference]: Finished difference Result 162 states and 205 transitions. [2023-11-29 01:31:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:31:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 01:31:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:01,574 INFO L225 Difference]: With dead ends: 162 [2023-11-29 01:31:01,574 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 01:31:01,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:31:01,578 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:01,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:31:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 01:31:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2023-11-29 01:31:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 01:31:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-11-29 01:31:01,590 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 19 [2023-11-29 01:31:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:01,591 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-11-29 01:31:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-11-29 01:31:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 01:31:01,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:01,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:01,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:31:01,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:01,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -311402757, now seen corresponding path program 1 times [2023-11-29 01:31:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:01,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898921678] [2023-11-29 01:31:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:31:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898921678] [2023-11-29 01:31:01,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898921678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:01,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816130500] [2023-11-29 01:31:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:01,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:01,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:01,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:31:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:31:01,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:01,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816130500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:01,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:01,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-29 01:31:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372531031] [2023-11-29 01:31:01,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:31:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:31:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:31:01,951 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:02,123 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2023-11-29 01:31:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:31:02,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2023-11-29 01:31:02,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:02,125 INFO L225 Difference]: With dead ends: 64 [2023-11-29 01:31:02,126 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 01:31:02,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:31:02,127 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:02,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 113 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 01:31:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2023-11-29 01:31:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 01:31:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-29 01:31:02,138 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 18 [2023-11-29 01:31:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-29 01:31:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-29 01:31:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:31:02,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:02,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:02,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:31:02,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:31:02,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:02,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash -388257234, now seen corresponding path program 1 times [2023-11-29 01:31:02,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:02,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095415702] [2023-11-29 01:31:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 01:31:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095415702] [2023-11-29 01:31:02,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095415702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:02,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940329125] [2023-11-29 01:31:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:02,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:02,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:02,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:31:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:02,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:02,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:02,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940329125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:02,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-11-29 01:31:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807995150] [2023-11-29 01:31:02,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:31:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:31:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:31:02,628 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:02,723 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-11-29 01:31:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:31:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-29 01:31:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:02,725 INFO L225 Difference]: With dead ends: 70 [2023-11-29 01:31:02,725 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 01:31:02,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:31:02,726 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:02,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 130 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:31:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 01:31:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2023-11-29 01:31:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 01:31:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2023-11-29 01:31:02,735 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 24 [2023-11-29 01:31:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2023-11-29 01:31:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2023-11-29 01:31:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:31:02,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:02,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:02,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:02,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:02,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 848927688, now seen corresponding path program 1 times [2023-11-29 01:31:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737450317] [2023-11-29 01:31:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 01:31:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737450317] [2023-11-29 01:31:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737450317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026597310] [2023-11-29 01:31:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:03,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:31:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:31:03,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:03,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026597310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:03,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:03,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-11-29 01:31:03,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058278673] [2023-11-29 01:31:03,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:03,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:31:03,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:31:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:31:03,310 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:03,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:03,491 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2023-11-29 01:31:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:31:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-29 01:31:03,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:03,492 INFO L225 Difference]: With dead ends: 92 [2023-11-29 01:31:03,493 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 01:31:03,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:31:03,494 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:03,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 76 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 01:31:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-29 01:31:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 01:31:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-11-29 01:31:03,502 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 25 [2023-11-29 01:31:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:03,502 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-11-29 01:31:03,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 01:31:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-11-29 01:31:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 01:31:03,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:03,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:03,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:31:03,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:03,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:03,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash 43438373, now seen corresponding path program 1 times [2023-11-29 01:31:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:03,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959603945] [2023-11-29 01:31:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:31:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:03,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959603945] [2023-11-29 01:31:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959603945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882008673] [2023-11-29 01:31:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:03,874 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:03,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:31:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:31:03,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:04,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:31:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882008673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:04,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 01:31:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364586612] [2023-11-29 01:31:04,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:31:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:04,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:31:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:31:04,361 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:31:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:04,694 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2023-11-29 01:31:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:31:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2023-11-29 01:31:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:04,697 INFO L225 Difference]: With dead ends: 90 [2023-11-29 01:31:04,697 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 01:31:04,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:31:04,699 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:04,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 130 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:31:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 01:31:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2023-11-29 01:31:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 01:31:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2023-11-29 01:31:04,710 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 29 [2023-11-29 01:31:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:04,710 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2023-11-29 01:31:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 18 states have internal predecessors, (54), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 01:31:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2023-11-29 01:31:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:31:04,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:04,713 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:04,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:31:04,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:04,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:04,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1688298280, now seen corresponding path program 1 times [2023-11-29 01:31:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77188249] [2023-11-29 01:31:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:31:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:31:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77188249] [2023-11-29 01:31:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77188249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110971547] [2023-11-29 01:31:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:05,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:05,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:31:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:31:05,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:31:05,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:31:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110971547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:05,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2023-11-29 01:31:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358968961] [2023-11-29 01:31:05,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:31:05,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:31:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:31:05,323 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:31:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:05,603 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2023-11-29 01:31:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:31:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2023-11-29 01:31:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:05,605 INFO L225 Difference]: With dead ends: 117 [2023-11-29 01:31:05,605 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 01:31:05,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:31:05,607 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 104 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:05,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 80 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 01:31:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 72. [2023-11-29 01:31:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 01:31:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-11-29 01:31:05,614 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 36 [2023-11-29 01:31:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:05,615 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-11-29 01:31:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 8 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 01:31:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-11-29 01:31:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:31:05,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:05,617 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:05,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:31:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:05,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 931344121, now seen corresponding path program 2 times [2023-11-29 01:31:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167529066] [2023-11-29 01:31:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:31:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 01:31:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167529066] [2023-11-29 01:31:06,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167529066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157618272] [2023-11-29 01:31:06,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:06,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:06,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:31:06,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:31:06,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:06,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:31:06,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 01:31:06,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 99 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 01:31:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157618272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:07,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-11-29 01:31:07,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220047585] [2023-11-29 01:31:07,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:31:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:31:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:31:07,496 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 31 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 01:31:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:08,168 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2023-11-29 01:31:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 01:31:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 63 [2023-11-29 01:31:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:08,171 INFO L225 Difference]: With dead ends: 144 [2023-11-29 01:31:08,171 INFO L226 Difference]: Without dead ends: 143 [2023-11-29 01:31:08,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:31:08,174 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 154 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 130 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:31:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-29 01:31:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 92. [2023-11-29 01:31:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-29 01:31:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2023-11-29 01:31:08,184 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 63 [2023-11-29 01:31:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:08,184 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2023-11-29 01:31:08,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (10), 3 states have call predecessors, (10), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 01:31:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2023-11-29 01:31:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 01:31:08,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:08,186 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:08,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:31:08,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:08,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:08,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash -324258008, now seen corresponding path program 2 times [2023-11-29 01:31:08,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:08,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117804661] [2023-11-29 01:31:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:08,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:31:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:31:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117804661] [2023-11-29 01:31:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117804661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384044827] [2023-11-29 01:31:08,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:08,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:08,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:31:08,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:31:08,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:08,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:31:08,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:31:08,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:31:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384044827] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:09,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:09,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 28 [2023-11-29 01:31:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710934657] [2023-11-29 01:31:09,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:31:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:09,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:31:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:31:09,230 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 26 states have internal predecessors, (92), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:31:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:09,880 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2023-11-29 01:31:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:31:09,881 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 26 states have internal predecessors, (92), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) Word has length 47 [2023-11-29 01:31:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:09,882 INFO L225 Difference]: With dead ends: 160 [2023-11-29 01:31:09,882 INFO L226 Difference]: Without dead ends: 147 [2023-11-29 01:31:09,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:31:09,884 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 168 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:09,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 120 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:31:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-29 01:31:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 102. [2023-11-29 01:31:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-29 01:31:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2023-11-29 01:31:09,895 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 47 [2023-11-29 01:31:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:09,895 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2023-11-29 01:31:09,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 26 states have internal predecessors, (92), 12 states have call successors, (14), 4 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:31:09,896 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2023-11-29 01:31:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:31:09,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:09,897 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:09,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:31:10,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:31:10,100 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:10,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash -313961412, now seen corresponding path program 3 times [2023-11-29 01:31:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:10,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113446928] [2023-11-29 01:31:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:31:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 6 proven. 175 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 01:31:10,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113446928] [2023-11-29 01:31:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113446928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217812599] [2023-11-29 01:31:10,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:31:10,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:10,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:10,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:10,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:31:10,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 01:31:10,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:10,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:31:10,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 76 proven. 99 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:31:10,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 86 proven. 99 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 01:31:11,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217812599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:11,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:11,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-11-29 01:31:11,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424614838] [2023-11-29 01:31:11,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:11,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 01:31:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 01:31:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:31:11,752 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 37 states, 36 states have (on average 3.0) internal successors, (108), 34 states have internal predecessors, (108), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-29 01:31:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:13,045 INFO L93 Difference]: Finished difference Result 221 states and 250 transitions. [2023-11-29 01:31:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:31:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.0) internal successors, (108), 34 states have internal predecessors, (108), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2023-11-29 01:31:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:13,048 INFO L225 Difference]: With dead ends: 221 [2023-11-29 01:31:13,048 INFO L226 Difference]: Without dead ends: 196 [2023-11-29 01:31:13,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=913, Invalid=4637, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 01:31:13,051 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 324 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:13,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 185 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:31:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-29 01:31:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 122. [2023-11-29 01:31:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 97 states have internal predecessors, (103), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2023-11-29 01:31:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2023-11-29 01:31:13,062 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 81 [2023-11-29 01:31:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2023-11-29 01:31:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.0) internal successors, (108), 34 states have internal predecessors, (108), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-29 01:31:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2023-11-29 01:31:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:31:13,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:13,066 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:13,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:13,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:31:13,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:13,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1284592019, now seen corresponding path program 3 times [2023-11-29 01:31:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:13,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667366558] [2023-11-29 01:31:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:31:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-29 01:31:14,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:14,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667366558] [2023-11-29 01:31:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667366558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720234643] [2023-11-29 01:31:14,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:31:14,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:14,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:14,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:14,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:31:14,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 01:31:14,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:14,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:31:14,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-29 01:31:15,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 01:31:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720234643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:19,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-11-29 01:31:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803798220] [2023-11-29 01:31:19,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 01:31:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 01:31:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:31:19,762 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 51 states, 50 states have (on average 2.5) internal successors, (125), 49 states have internal predecessors, (125), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:31:21,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:21,172 INFO L93 Difference]: Finished difference Result 236 states and 272 transitions. [2023-11-29 01:31:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 01:31:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.5) internal successors, (125), 49 states have internal predecessors, (125), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 107 [2023-11-29 01:31:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:21,174 INFO L225 Difference]: With dead ends: 236 [2023-11-29 01:31:21,174 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 01:31:21,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-11-29 01:31:21,177 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 294 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:21,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 360 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:31:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 01:31:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 162. [2023-11-29 01:31:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 129 states have internal predecessors, (135), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2023-11-29 01:31:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 183 transitions. [2023-11-29 01:31:21,187 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 183 transitions. Word has length 107 [2023-11-29 01:31:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:21,188 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 183 transitions. [2023-11-29 01:31:21,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.5) internal successors, (125), 49 states have internal predecessors, (125), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:31:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 183 transitions. [2023-11-29 01:31:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 01:31:21,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:21,189 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:21,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:21,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:31:21,390 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:21,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash -372191210, now seen corresponding path program 4 times [2023-11-29 01:31:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587736766] [2023-11-29 01:31:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:31:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 2 proven. 317 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 01:31:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587736766] [2023-11-29 01:31:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587736766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279538047] [2023-11-29 01:31:22,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:31:22,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:22,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:22,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:31:22,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:31:22,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:22,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:31:22,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 2 proven. 317 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 01:31:23,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 32 proven. 319 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 01:31:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279538047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:27,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-11-29 01:31:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118434528] [2023-11-29 01:31:27,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 01:31:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:27,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 01:31:27,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 01:31:27,497 INFO L87 Difference]: Start difference. First operand 162 states and 183 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 56 states have internal predecessors, (154), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 01:31:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:29,844 INFO L93 Difference]: Finished difference Result 329 states and 368 transitions. [2023-11-29 01:31:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 01:31:29,844 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 56 states have internal predecessors, (154), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) Word has length 113 [2023-11-29 01:31:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:29,847 INFO L225 Difference]: With dead ends: 329 [2023-11-29 01:31:29,847 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 01:31:29,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 01:31:29,852 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 709 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:29,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 428 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:31:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 01:31:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 266. [2023-11-29 01:31:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 213 states have (on average 1.0328638497652582) internal successors, (220), 212 states have internal predecessors, (220), 9 states have call successors, (9), 6 states have call predecessors, (9), 43 states have return successors, (61), 47 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-29 01:31:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 290 transitions. [2023-11-29 01:31:29,869 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 290 transitions. Word has length 113 [2023-11-29 01:31:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:29,870 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 290 transitions. [2023-11-29 01:31:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 56 states have internal predecessors, (154), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-11-29 01:31:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 290 transitions. [2023-11-29 01:31:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 01:31:29,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:29,873 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:29,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:31:30,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:31:30,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:30,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1156419226, now seen corresponding path program 5 times [2023-11-29 01:31:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:30,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783643346] [2023-11-29 01:31:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:30,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:31:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:31:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 219 proven. 247 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-29 01:31:31,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783643346] [2023-11-29 01:31:31,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783643346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:31,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974455924] [2023-11-29 01:31:31,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:31:31,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:31,244 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:31,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:31:31,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-11-29 01:31:31,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:31,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 01:31:31,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 478 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-11-29 01:31:31,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:31:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 522 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 01:31:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974455924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:31:38,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:31:38,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 30] total 66 [2023-11-29 01:31:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227271898] [2023-11-29 01:31:38,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:31:38,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-29 01:31:38,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-29 01:31:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=3994, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 01:31:38,648 INFO L87 Difference]: Start difference. First operand 266 states and 290 transitions. Second operand has 67 states, 66 states have (on average 2.772727272727273) internal successors, (183), 64 states have internal predecessors, (183), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-11-29 01:31:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:42,763 INFO L93 Difference]: Finished difference Result 521 states and 584 transitions. [2023-11-29 01:31:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 01:31:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.772727272727273) internal successors, (183), 64 states have internal predecessors, (183), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) Word has length 135 [2023-11-29 01:31:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:42,767 INFO L225 Difference]: With dead ends: 521 [2023-11-29 01:31:42,767 INFO L226 Difference]: Without dead ends: 466 [2023-11-29 01:31:42,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 250 SyntacticMatches, 3 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7492 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3422, Invalid=23968, Unknown=0, NotChecked=0, Total=27390 [2023-11-29 01:31:42,773 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 569 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:42,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 602 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:31:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-29 01:31:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 212. [2023-11-29 01:31:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 169 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 35 states have return successors, (52), 38 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 01:31:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 233 transitions. [2023-11-29 01:31:42,787 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 233 transitions. Word has length 135 [2023-11-29 01:31:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:42,788 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 233 transitions. [2023-11-29 01:31:42,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.772727272727273) internal successors, (183), 64 states have internal predecessors, (183), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-11-29 01:31:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 233 transitions. [2023-11-29 01:31:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:31:42,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:42,791 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:42,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:31:42,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:42,992 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:31:42,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -384078507, now seen corresponding path program 4 times [2023-11-29 01:31:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:42,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814170543] [2023-11-29 01:31:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:31:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:45,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:31:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-29 01:31:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:47,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814170543] [2023-11-29 01:31:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814170543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:31:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869728786] [2023-11-29 01:31:47,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:31:47,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:47,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:47,766 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:47,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:31:47,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:31:47,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:47,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:31:47,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-29 01:31:48,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 70 proven. 909 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-11-29 01:32:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869728786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:32:34,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:32:34,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-11-29 01:32:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897156796] [2023-11-29 01:32:34,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:34,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-11-29 01:32:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-11-29 01:32:34,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 01:32:34,105 INFO L87 Difference]: Start difference. First operand 212 states and 233 transitions. Second operand has 91 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-29 01:32:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:37,674 INFO L93 Difference]: Finished difference Result 444 states and 511 transitions. [2023-11-29 01:32:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-29 01:32:37,675 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 195 [2023-11-29 01:32:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:37,677 INFO L225 Difference]: With dead ends: 444 [2023-11-29 01:32:37,677 INFO L226 Difference]: Without dead ends: 443 [2023-11-29 01:32:37,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-11-29 01:32:37,680 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 536 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:37,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 727 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:32:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-29 01:32:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 292. [2023-11-29 01:32:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 234 states have (on average 1.0213675213675213) internal successors, (239), 233 states have internal predecessors, (239), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (84), 54 states have call predecessors, (84), 5 states have call successors, (84) [2023-11-29 01:32:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 329 transitions. [2023-11-29 01:32:37,694 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 329 transitions. Word has length 195 [2023-11-29 01:32:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:37,695 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 329 transitions. [2023-11-29 01:32:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.3666666666666667) internal successors, (213), 89 states have internal predecessors, (213), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-11-29 01:32:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 329 transitions. [2023-11-29 01:32:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 01:32:37,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:37,697 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 19, 19, 19, 19, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:37,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:32:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:37,898 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:32:37,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash 550719224, now seen corresponding path program 6 times [2023-11-29 01:32:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835205572] [2023-11-29 01:32:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:32:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:38,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:32:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:32:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 2 proven. 1162 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 01:32:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835205572] [2023-11-29 01:32:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835205572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705789620] [2023-11-29 01:32:42,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:32:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:42,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:42,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:32:43,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-11-29 01:32:43,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:32:43,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 01:32:43,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 254 proven. 904 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2023-11-29 01:32:44,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 254 proven. 984 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2023-11-29 01:33:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705789620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:55,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:33:55,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2023-11-29 01:33:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784701008] [2023-11-29 01:33:55,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-11-29 01:33:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-11-29 01:33:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2023-11-29 01:33:55,517 INFO L87 Difference]: Start difference. First operand 292 states and 329 transitions. Second operand has 107 states, 106 states have (on average 2.4716981132075473) internal successors, (262), 104 states have internal predecessors, (262), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-11-29 01:34:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:05,909 INFO L93 Difference]: Finished difference Result 775 states and 884 transitions. [2023-11-29 01:34:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-11-29 01:34:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.4716981132075473) internal successors, (262), 104 states have internal predecessors, (262), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) Word has length 223 [2023-11-29 01:34:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:05,913 INFO L225 Difference]: With dead ends: 775 [2023-11-29 01:34:05,913 INFO L226 Difference]: Without dead ends: 666 [2023-11-29 01:34:05,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23450 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=8676, Invalid=72264, Unknown=0, NotChecked=0, Total=80940 [2023-11-29 01:34:05,919 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 934 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 6235 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 6489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 6235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:05,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1351 Invalid, 6489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 6235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:34:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-29 01:34:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 382. [2023-11-29 01:34:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 306 states have (on average 1.0163398692810457) internal successors, (311), 305 states have internal predecessors, (311), 6 states have call successors, (6), 4 states have call predecessors, (6), 69 states have return successors, (102), 72 states have call predecessors, (102), 5 states have call successors, (102) [2023-11-29 01:34:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 419 transitions. [2023-11-29 01:34:05,933 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 419 transitions. Word has length 223 [2023-11-29 01:34:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:05,934 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 419 transitions. [2023-11-29 01:34:05,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.4716981132075473) internal successors, (262), 104 states have internal predecessors, (262), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-11-29 01:34:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 419 transitions. [2023-11-29 01:34:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-11-29 01:34:05,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:05,939 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:05,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:34:06,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:34:06,140 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-29 01:34:06,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1809312549, now seen corresponding path program 5 times [2023-11-29 01:34:06,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:06,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528458094] [2023-11-29 01:34:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:34:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:22,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:27,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5948 backedges. 0 proven. 3109 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2023-11-29 01:34:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528458094] [2023-11-29 01:34:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528458094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694663614] [2023-11-29 01:34:31,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:34:31,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:31,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:31,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:31,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdee24bd-718c-46f2-9407-0e5a63ce1a7f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:34:32,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2023-11-29 01:34:32,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:32,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-29 01:34:32,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5948 backedges. 0 proven. 3109 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2023-11-29 01:34:34,616 INFO L327 TraceCheckSpWp]: Computing backward predicates...