./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:02:19,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:02:19,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 05:02:20,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:02:20,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:02:20,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:02:20,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:02:20,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:02:20,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:02:20,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:02:20,060 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:02:20,060 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:02:20,061 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:02:20,061 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:02:20,063 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:02:20,065 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:02:20,065 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:02:20,066 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:02:20,066 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:02:20,067 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:02:20,067 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:02:20,072 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:02:20,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:02:20,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:02:20,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:02:20,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:02:20,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:02:20,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:02:20,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:02:20,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:02:20,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:02:20,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:02:20,078 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:02:20,079 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:02:20,080 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:02:20,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:02:20,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:02:20,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:02:20,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:02:20,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:02:20,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:02:20,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:02:20,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:02:20,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:02:20,085 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:02:20,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:02:20,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:02:20,085 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:02:20,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:02:20,086 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 [2024-11-09 05:02:20,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:02:20,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:02:20,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:02:20,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:02:20,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:02:20,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c Unable to find full path for "g++" [2024-11-09 05:02:23,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:02:23,372 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:02:23,372 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-11-09 05:02:23,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/data/7883c364e/f8802aa851754befbec49e3f1eba9112/FLAGb28c69fe1 [2024-11-09 05:02:23,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/data/7883c364e/f8802aa851754befbec49e3f1eba9112 [2024-11-09 05:02:23,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:02:23,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:02:23,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:02:23,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:02:23,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:02:23,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce4a486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23, skipping insertion in model container [2024-11-09 05:02:23,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:02:23,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:02:23,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:02:23,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:02:23,808 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:02:23,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23 WrapperNode [2024-11-09 05:02:23,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:02:23,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:02:23,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:02:23,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:02:23,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,855 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-09 05:02:23,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:02:23,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:02:23,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:02:23,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:02:23,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:02:23,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:02:23,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:02:23,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:02:23,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (1/1) ... [2024-11-09 05:02:23,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:02:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:23,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:02:23,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:02:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:02:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:02:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:02:23,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:02:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:02:23,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:02:24,075 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:02:24,078 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:02:24,542 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-09 05:02:24,546 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:02:24,618 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:02:24,619 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:02:24,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:24 BoogieIcfgContainer [2024-11-09 05:02:24,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:02:24,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:02:24,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:02:24,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:02:24,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:02:23" (1/3) ... [2024-11-09 05:02:24,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a97c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:24, skipping insertion in model container [2024-11-09 05:02:24,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:23" (2/3) ... [2024-11-09 05:02:24,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a97c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:24, skipping insertion in model container [2024-11-09 05:02:24,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:24" (3/3) ... [2024-11-09 05:02:24,632 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2024-11-09 05:02:24,656 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:02:24,656 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 05:02:24,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:02:24,744 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c3deba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:02:24,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-09 05:02:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 05:02:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 05:02:24,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:24,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 05:02:24,762 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:24,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 5353265, now seen corresponding path program 1 times [2024-11-09 05:02:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933108611] [2024-11-09 05:02:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:02:24,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:24,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933108611] [2024-11-09 05:02:24,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933108611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:24,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:02:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297237360] [2024-11-09 05:02:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:24,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:02:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:02:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:02:25,025 INFO L87 Difference]: Start difference. First operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:02:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:25,073 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-09 05:02:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:02:25,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 05:02:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:25,089 INFO L225 Difference]: With dead ends: 112 [2024-11-09 05:02:25,089 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 05:02:25,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:02:25,102 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:25,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:02:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 05:02:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 05:02:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 54 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:02:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-09 05:02:25,165 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2024-11-09 05:02:25,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:25,166 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-09 05:02:25,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:02:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-09 05:02:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:02:25,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:25,170 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:25,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:02:25,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:25,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1735968466, now seen corresponding path program 1 times [2024-11-09 05:02:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:25,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783602069] [2024-11-09 05:02:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:02:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332243499] [2024-11-09 05:02:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:25,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:25,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:02:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:25,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:02:25,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:02:25,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:25,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783602069] [2024-11-09 05:02:25,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332243499] [2024-11-09 05:02:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332243499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:02:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823740429] [2024-11-09 05:02:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:25,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:02:25,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:02:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:25,436 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:02:25,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:25,578 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-09 05:02:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:02:25,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2024-11-09 05:02:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:25,582 INFO L225 Difference]: With dead ends: 131 [2024-11-09 05:02:25,585 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 05:02:25,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:25,587 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:25,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 05:02:25,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-09 05:02:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.702127659574468) internal successors, (80), 70 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:02:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-09 05:02:25,612 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 9 [2024-11-09 05:02:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:25,614 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-09 05:02:25,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:02:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-09 05:02:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:02:25,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:25,616 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:25,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:02:25,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:25,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:25,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash -17467134, now seen corresponding path program 1 times [2024-11-09 05:02:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631437068] [2024-11-09 05:02:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:25,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:02:26,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631437068] [2024-11-09 05:02:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631437068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:02:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679860793] [2024-11-09 05:02:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:26,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:02:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:02:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:26,058 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:26,146 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-09 05:02:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:02:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2024-11-09 05:02:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:26,149 INFO L225 Difference]: With dead ends: 92 [2024-11-09 05:02:26,153 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 05:02:26,154 INFO L431 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 [2024-11-09 05:02:26,155 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:26,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 05:02:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-09 05:02:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 70 states have internal predecessors, (78), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:02:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-09 05:02:26,174 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 15 [2024-11-09 05:02:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:26,175 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-09 05:02:26,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-09 05:02:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:02:26,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:26,177 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:26,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:02:26,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:26,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -541482501, now seen corresponding path program 1 times [2024-11-09 05:02:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336183844] [2024-11-09 05:02:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:02:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791215700] [2024-11-09 05:02:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:26,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:26,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:02:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:26,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:02:26,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:02:26,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:26,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336183844] [2024-11-09 05:02:26,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:26,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791215700] [2024-11-09 05:02:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791215700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:26,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:26,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:02:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186572090] [2024-11-09 05:02:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:26,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:02:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:02:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:26,370 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:26,530 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2024-11-09 05:02:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:02:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-09 05:02:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:26,533 INFO L225 Difference]: With dead ends: 117 [2024-11-09 05:02:26,533 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 05:02:26,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:26,534 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:26,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 05:02:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-11-09 05:02:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 85 states have internal predecessors, (101), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 05:02:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-09 05:02:26,554 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 16 [2024-11-09 05:02:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:26,555 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-09 05:02:26,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-09 05:02:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:02:26,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:26,556 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:26,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:26,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:26,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:26,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -673638051, now seen corresponding path program 1 times [2024-11-09 05:02:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930316755] [2024-11-09 05:02:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:02:27,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:27,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930316755] [2024-11-09 05:02:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930316755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:27,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:02:27,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469951234] [2024-11-09 05:02:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:27,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:02:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:02:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:27,020 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:02:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:27,645 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-09 05:02:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:02:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-11-09 05:02:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:27,647 INFO L225 Difference]: With dead ends: 115 [2024-11-09 05:02:27,648 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 05:02:27,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:02:27,649 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:27,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:02:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 05:02:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-09 05:02:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 89 states have internal predecessors, (105), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 05:02:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-09 05:02:27,672 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 18 [2024-11-09 05:02:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:27,673 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-09 05:02:27,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:02:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-09 05:02:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:02:27,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:27,674 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:27,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:02:27,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:27,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash 592056984, now seen corresponding path program 1 times [2024-11-09 05:02:27,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045613892] [2024-11-09 05:02:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:02:27,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045613892] [2024-11-09 05:02:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045613892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:27,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:27,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:02:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555806903] [2024-11-09 05:02:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:27,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:02:27,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:02:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:27,800 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:28,272 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-09 05:02:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:02:28,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-09 05:02:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:28,275 INFO L225 Difference]: With dead ends: 110 [2024-11-09 05:02:28,275 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 05:02:28,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:02:28,276 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:28,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:02:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 05:02:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-09 05:02:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 90 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 05:02:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-09 05:02:28,301 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 19 [2024-11-09 05:02:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:28,301 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-09 05:02:28,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:02:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-09 05:02:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:02:28,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:28,303 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:28,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:02:28,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:28,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash -682443809, now seen corresponding path program 1 times [2024-11-09 05:02:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:28,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527498506] [2024-11-09 05:02:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:02:28,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822649504] [2024-11-09 05:02:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:28,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:28,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:02:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:28,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:02:28,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:02:28,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:28,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527498506] [2024-11-09 05:02:28,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822649504] [2024-11-09 05:02:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822649504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:02:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708453634] [2024-11-09 05:02:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:28,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:02:28,577 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:28,737 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-09 05:02:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-09 05:02:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:28,740 INFO L225 Difference]: With dead ends: 120 [2024-11-09 05:02:28,740 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 05:02:28,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:02:28,742 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:28,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 05:02:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-09 05:02:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 94 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:02:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-09 05:02:28,780 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 26 [2024-11-09 05:02:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:28,781 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-09 05:02:28,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-09 05:02:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:02:28,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:28,786 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:28,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:02:28,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:28,987 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:28,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash 319078454, now seen corresponding path program 1 times [2024-11-09 05:02:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995537609] [2024-11-09 05:02:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:02:29,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529791246] [2024-11-09 05:02:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:29,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:29,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:29,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:02:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:29,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:02:29,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:02:29,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:29,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:29,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995537609] [2024-11-09 05:02:29,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529791246] [2024-11-09 05:02:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529791246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116771738] [2024-11-09 05:02:29,972 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:02:29,972 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:29,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:29,987 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:29,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:32,683 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 05:02:32,688 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:33,744 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2072#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~A~0#1| 50))' at error location [2024-11-09 05:02:33,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:02:33,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-11-09 05:02:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907141381] [2024-11-09 05:02:33,746 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:02:33,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:33,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:02:33,747 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:33,938 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-11-09 05:02:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:33,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2024-11-09 05:02:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:33,941 INFO L225 Difference]: With dead ends: 186 [2024-11-09 05:02:33,941 INFO L226 Difference]: Without dead ends: 182 [2024-11-09 05:02:33,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:02:33,942 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:33,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:02:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-09 05:02:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2024-11-09 05:02:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 145 states have internal predecessors, (179), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 05:02:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-09 05:02:33,969 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 27 [2024-11-09 05:02:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:33,969 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-09 05:02:33,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-09 05:02:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 05:02:33,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:33,971 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:33,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:02:34,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:34,175 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:34,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1516011015, now seen corresponding path program 1 times [2024-11-09 05:02:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:34,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758333839] [2024-11-09 05:02:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:02:34,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:34,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758333839] [2024-11-09 05:02:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758333839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:02:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661396261] [2024-11-09 05:02:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:34,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:02:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:02:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:34,404 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:35,089 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-09 05:02:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:02:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-09 05:02:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:35,092 INFO L225 Difference]: With dead ends: 182 [2024-11-09 05:02:35,092 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 05:02:35,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:02:35,093 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:35,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:02:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 05:02:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2024-11-09 05:02:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 146 states have internal predecessors, (180), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 05:02:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-09 05:02:35,136 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 31 [2024-11-09 05:02:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:35,137 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-09 05:02:35,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-09 05:02:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:02:35,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:35,141 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:35,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:02:35,142 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:35,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash 918975219, now seen corresponding path program 1 times [2024-11-09 05:02:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:35,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049512657] [2024-11-09 05:02:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:35,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:02:35,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:35,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049512657] [2024-11-09 05:02:35,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049512657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664313198] [2024-11-09 05:02:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:35,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:35,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:35,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:02:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:35,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:02:35,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:02:35,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664313198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:35,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 05:02:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783032658] [2024-11-09 05:02:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:35,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:35,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:35,405 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 05:02:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:35,536 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-11-09 05:02:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:35,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2024-11-09 05:02:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:35,539 INFO L225 Difference]: With dead ends: 254 [2024-11-09 05:02:35,539 INFO L226 Difference]: Without dead ends: 252 [2024-11-09 05:02:35,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:35,545 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:35,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 116 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-09 05:02:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-09 05:02:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 181 states have (on average 1.430939226519337) internal successors, (259), 199 states have internal predecessors, (259), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 05:02:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2024-11-09 05:02:35,608 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 32 [2024-11-09 05:02:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:35,611 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2024-11-09 05:02:35,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 05:02:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2024-11-09 05:02:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:02:35,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:35,614 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:35,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:35,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:02:35,815 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:35,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 248298920, now seen corresponding path program 1 times [2024-11-09 05:02:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832521770] [2024-11-09 05:02:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:02:35,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832521770] [2024-11-09 05:02:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832521770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:02:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520514891] [2024-11-09 05:02:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:35,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:02:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:02:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:02:35,919 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:36,069 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2024-11-09 05:02:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-11-09 05:02:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:36,072 INFO L225 Difference]: With dead ends: 237 [2024-11-09 05:02:36,072 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 05:02:36,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:02:36,074 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:36,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 05:02:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-09 05:02:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 191 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 05:02:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 308 transitions. [2024-11-09 05:02:36,098 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 308 transitions. Word has length 32 [2024-11-09 05:02:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:36,098 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 308 transitions. [2024-11-09 05:02:36,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:02:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 308 transitions. [2024-11-09 05:02:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:02:36,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:36,100 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:02:36,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 05:02:36,100 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:36,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539220, now seen corresponding path program 1 times [2024-11-09 05:02:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436127452] [2024-11-09 05:02:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:02:36,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436127452] [2024-11-09 05:02:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436127452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151656607] [2024-11-09 05:02:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:36,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:36,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:36,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:02:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:36,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:02:36,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:02:36,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:02:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151656607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1752314349] [2024-11-09 05:02:36,398 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 05:02:36,398 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:36,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:36,399 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:36,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:38,108 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 05:02:38,110 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1752314349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:02:38,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 17 [2024-11-09 05:02:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489722167] [2024-11-09 05:02:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:38,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:02:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:02:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:02:38,887 INFO L87 Difference]: Start difference. First operand 222 states and 308 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:02:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:39,773 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2024-11-09 05:02:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:02:39,774 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-09 05:02:39,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:39,775 INFO L225 Difference]: With dead ends: 233 [2024-11-09 05:02:39,776 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 05:02:39,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:02:39,777 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 128 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:39,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 74 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:02:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 05:02:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2024-11-09 05:02:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 163 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 05:02:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2024-11-09 05:02:39,810 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 33 [2024-11-09 05:02:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:39,811 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2024-11-09 05:02:39,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:02:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2024-11-09 05:02:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 05:02:39,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:39,813 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:39,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:40,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:40,017 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:40,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash -614957125, now seen corresponding path program 1 times [2024-11-09 05:02:40,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:40,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158289156] [2024-11-09 05:02:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:02:40,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158289156] [2024-11-09 05:02:40,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158289156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:40,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:40,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:02:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412484974] [2024-11-09 05:02:40,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:40,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:02:40,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:02:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:02:40,084 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:40,223 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-11-09 05:02:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:02:40,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2024-11-09 05:02:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:40,226 INFO L225 Difference]: With dead ends: 190 [2024-11-09 05:02:40,226 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 05:02:40,226 INFO L431 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 [2024-11-09 05:02:40,227 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:40,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 05:02:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 05:02:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.364864864864865) internal successors, (202), 162 states have internal predecessors, (202), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 05:02:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-09 05:02:40,261 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 51 [2024-11-09 05:02:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:40,261 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-09 05:02:40,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-09 05:02:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:02:40,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:40,263 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:40,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 05:02:40,264 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:40,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1883801580, now seen corresponding path program 1 times [2024-11-09 05:02:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678004427] [2024-11-09 05:02:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:02:40,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678004427] [2024-11-09 05:02:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678004427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846660223] [2024-11-09 05:02:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:40,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:40,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:40,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:40,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:02:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:40,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:02:40,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:02:40,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846660223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 05:02:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720024318] [2024-11-09 05:02:40,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:40,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:02:40,795 INFO L87 Difference]: Start difference. First operand 189 states and 252 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:02:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:40,953 INFO L93 Difference]: Finished difference Result 225 states and 291 transitions. [2024-11-09 05:02:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-09 05:02:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:40,955 INFO L225 Difference]: With dead ends: 225 [2024-11-09 05:02:40,956 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 05:02:40,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:02:40,957 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:40,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:02:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 05:02:40,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-09 05:02:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 162 states have internal predecessors, (200), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 05:02:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2024-11-09 05:02:40,994 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 52 [2024-11-09 05:02:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:40,995 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2024-11-09 05:02:40,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 05:02:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2024-11-09 05:02:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 05:02:40,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:40,997 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:41,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:41,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:02:41,201 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:41,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1731693277, now seen corresponding path program 1 times [2024-11-09 05:02:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506004907] [2024-11-09 05:02:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:02:41,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506004907] [2024-11-09 05:02:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506004907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802421654] [2024-11-09 05:02:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:41,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:41,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:41,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:02:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:41,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:02:41,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:02:41,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:41,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802421654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:41,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:41,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-09 05:02:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998659326] [2024-11-09 05:02:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:41,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:02:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:02:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:02:41,771 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:42,024 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-09 05:02:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:02:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2024-11-09 05:02:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:42,026 INFO L225 Difference]: With dead ends: 199 [2024-11-09 05:02:42,027 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 05:02:42,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:02:42,028 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:42,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:02:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 05:02:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-09 05:02:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 168 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 05:02:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2024-11-09 05:02:42,073 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 53 [2024-11-09 05:02:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:42,073 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2024-11-09 05:02:42,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2024-11-09 05:02:42,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 05:02:42,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:42,075 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:42,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 05:02:42,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:42,277 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:42,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2142884150, now seen corresponding path program 1 times [2024-11-09 05:02:42,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:42,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794478779] [2024-11-09 05:02:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:42,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:02:42,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794478779] [2024-11-09 05:02:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794478779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60627483] [2024-11-09 05:02:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:42,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:42,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:42,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:42,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:02:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:42,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:02:42,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:02:42,797 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:42,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60627483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:42,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:42,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 05:02:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934501237] [2024-11-09 05:02:42,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:42,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:02:42,800 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:43,050 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-11-09 05:02:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:02:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2024-11-09 05:02:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:43,053 INFO L225 Difference]: With dead ends: 199 [2024-11-09 05:02:43,053 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 05:02:43,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:02:43,054 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:43,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:02:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 05:02:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-09 05:02:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 170 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 05:02:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2024-11-09 05:02:43,099 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 256 transitions. Word has length 54 [2024-11-09 05:02:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:43,099 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 256 transitions. [2024-11-09 05:02:43,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:02:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 256 transitions. [2024-11-09 05:02:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 05:02:43,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:43,101 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:43,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:43,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:02:43,302 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:02:43,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2022335832, now seen corresponding path program 1 times [2024-11-09 05:02:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:43,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067745593] [2024-11-09 05:02:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:02:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905845728] [2024-11-09 05:02:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:43,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:43,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:43,354 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:43,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:02:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:43,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:02:43,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:02:43,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:44,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067745593] [2024-11-09 05:02:44,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:02:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905845728] [2024-11-09 05:02:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905845728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615579698] [2024-11-09 05:02:44,592 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:02:44,593 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:02:44,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:02:44,594 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:02:44,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:02:49,039 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:02:49,040 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:02:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1615579698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:58,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 29 [2024-11-09 05:02:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043309822] [2024-11-09 05:02:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:58,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:02:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:02:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=908, Unknown=2, NotChecked=0, Total=1122 [2024-11-09 05:02:58,694 INFO L87 Difference]: Start difference. First operand 197 states and 256 transitions. Second operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:03:02,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:06,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:08,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:10,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:12,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:15,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:17,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:19,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:21,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:23,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 05:03:25,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:27,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:29,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:34,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:41,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:03:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:43,651 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2024-11-09 05:03:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 05:03:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2024-11-09 05:03:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:43,653 INFO L225 Difference]: With dead ends: 220 [2024-11-09 05:03:43,653 INFO L226 Difference]: Without dead ends: 212 [2024-11-09 05:03:43,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=709, Invalid=2367, Unknown=4, NotChecked=0, Total=3080 [2024-11-09 05:03:43,656 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 519 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 228 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:43,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 49 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 720 Invalid, 15 Unknown, 0 Unchecked, 33.4s Time] [2024-11-09 05:03:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-09 05:03:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 76. [2024-11-09 05:03:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:03:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-09 05:03:43,689 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2024-11-09 05:03:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:43,690 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-09 05:03:43,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:03:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-09 05:03:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 05:03:43,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:43,691 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:43,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:03:43,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:43,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:03:43,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1900590619, now seen corresponding path program 1 times [2024-11-09 05:03:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257415852] [2024-11-09 05:03:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:03:44,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257415852] [2024-11-09 05:03:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257415852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:44,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579592890] [2024-11-09 05:03:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:44,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:44,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:44,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:03:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:44,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:03:44,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:03:45,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:03:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579592890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031955589] [2024-11-09 05:03:48,843 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:03:48,843 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:03:48,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:03:48,844 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:03:48,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:03:52,652 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:03:52,654 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:04:03,344 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8203#(exists ((|v_ULTIMATE.start_main_~B~0#1_43| Int) (|v_ULTIMATE.start_main_~r~0#1_49| Int) (|v_ULTIMATE.start_main_~q~0#1_55| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_55| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_43| 1) (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~q~0#1_55| 2147483647)))' at error location [2024-11-09 05:04:03,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:04:03,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:04:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-09 05:04:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108154695] [2024-11-09 05:04:03,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:04:03,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:04:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:04:03,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1786, Unknown=3, NotChecked=0, Total=1980 [2024-11-09 05:04:03,347 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 05:04:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:06,103 INFO L93 Difference]: Finished difference Result 309 states and 392 transitions. [2024-11-09 05:04:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:04:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 59 [2024-11-09 05:04:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:06,105 INFO L225 Difference]: With dead ends: 309 [2024-11-09 05:04:06,105 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 05:04:06,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=408, Invalid=3371, Unknown=3, NotChecked=0, Total=3782 [2024-11-09 05:04:06,108 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 467 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:06,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:04:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 05:04:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 181. [2024-11-09 05:04:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.174496644295302) internal successors, (175), 156 states have internal predecessors, (175), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 05:04:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2024-11-09 05:04:06,180 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 59 [2024-11-09 05:04:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:06,181 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2024-11-09 05:04:06,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 05:04:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2024-11-09 05:04:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:04:06,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:06,183 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:06,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:04:06,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 05:04:06,389 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:04:06,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -485460006, now seen corresponding path program 1 times [2024-11-09 05:04:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709772962] [2024-11-09 05:04:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:06,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:04:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448107765] [2024-11-09 05:04:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:06,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:04:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:06,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:04:06,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:04:07,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:04:08,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709772962] [2024-11-09 05:04:08,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:04:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448107765] [2024-11-09 05:04:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448107765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [77054681] [2024-11-09 05:04:08,180 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 05:04:08,181 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:04:08,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:04:08,181 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:04:08,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:04:11,515 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:04:11,518 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:04:20,741 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9139#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~q~0#1_61| Int) (|v_ULTIMATE.start_main_~d~0#1_97| Int)) (and (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_97|)) (<= |v_ULTIMATE.start_main_~q~0#1_61| 2147483647) (<= |v_ULTIMATE.start_main_~d~0#1_97| 2147483647) (<= (+ (* |v_ULTIMATE.start_main_~q~0#1_61| |v_ULTIMATE.start_main_~d~0#1_97|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_61| 2147483648)))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 50) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 05:04:20,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:04:20,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:04:20,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 05:04:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247222088] [2024-11-09 05:04:20,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:04:20,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:04:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:04:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 05:04:20,744 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 05:04:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:21,433 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2024-11-09 05:04:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:04:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 69 [2024-11-09 05:04:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:21,436 INFO L225 Difference]: With dead ends: 208 [2024-11-09 05:04:21,436 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 05:04:21,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 05:04:21,438 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:21,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:04:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 05:04:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-09 05:04:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 100 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 05:04:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-09 05:04:21,490 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 69 [2024-11-09 05:04:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:21,491 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-09 05:04:21,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 05:04:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-09 05:04:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 05:04:21,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:21,494 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:21,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 05:04:21,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:21,695 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:04:21,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1624373500, now seen corresponding path program 1 times [2024-11-09 05:04:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661678857] [2024-11-09 05:04:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 05:04:21,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661678857] [2024-11-09 05:04:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661678857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:04:21,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:04:21,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:04:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376665093] [2024-11-09 05:04:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:04:21,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:04:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:04:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:04:21,913 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:04:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:22,407 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-09 05:04:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:04:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-09 05:04:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:22,409 INFO L225 Difference]: With dead ends: 119 [2024-11-09 05:04:22,409 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 05:04:22,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:04:22,410 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:22,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 05:04:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 05:04:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:04:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 05:04:22,438 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 71 [2024-11-09 05:04:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:22,438 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 05:04:22,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:04:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 05:04:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:04:22,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:22,440 INFO L215 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:22,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 05:04:22,441 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:04:22,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 530533004, now seen corresponding path program 2 times [2024-11-09 05:04:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417359336] [2024-11-09 05:04:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:04:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472088724] [2024-11-09 05:04:22,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:04:22,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:22,469 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:22,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:04:22,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:04:22,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:04:22,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:04:22,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 05:04:23,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:04:37,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417359336] [2024-11-09 05:04:37,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:04:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472088724] [2024-11-09 05:04:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472088724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385580703] [2024-11-09 05:04:37,748 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:04:37,748 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:04:37,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:04:37,749 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:04:37,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:04:41,059 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:04:41,062 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:05:09,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10117#(exists ((|v_ULTIMATE.start_main_~q~0#1_67| Int) (|v_ULTIMATE.start_main_~r~0#1_59| Int) (|v_ULTIMATE.start_main_~B~0#1_46| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~r~0#1_59| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_46| 1) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_67| |v_ULTIMATE.start_main_~r~0#1_59|)) (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_67| 2147483647)))' at error location [2024-11-09 05:05:09,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:05:09,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:05:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 05:05:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679324221] [2024-11-09 05:05:09,287 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:05:09,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:05:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:05:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1350, Unknown=15, NotChecked=0, Total=1722 [2024-11-09 05:05:09,289 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:05:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:09,808 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-09 05:05:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:05:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-09 05:05:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:09,811 INFO L225 Difference]: With dead ends: 123 [2024-11-09 05:05:09,812 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 05:05:09,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=357, Invalid=1350, Unknown=15, NotChecked=0, Total=1722 [2024-11-09 05:05:09,814 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:09,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:05:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 05:05:09,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-09 05:05:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:05:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 05:05:09,853 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 76 [2024-11-09 05:05:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:09,854 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 05:05:09,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:05:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 05:05:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 05:05:09,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:09,855 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:09,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 05:05:10,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 05:05:10,058 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:05:10,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash 238088971, now seen corresponding path program 2 times [2024-11-09 05:05:10,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:10,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986594208] [2024-11-09 05:05:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:10,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:10,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986594208] [2024-11-09 05:05:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986594208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:05:10,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174761765] [2024-11-09 05:05:10,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:05:10,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:10,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:10,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:05:10,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 05:05:10,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:05:10,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:05:10,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:05:10,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:10,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:05:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174761765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:05:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1041622515] [2024-11-09 05:05:11,138 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 05:05:11,138 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:05:11,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:05:11,139 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:05:11,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:05:14,307 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:05:14,310 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:05:24,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10917#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~d~0#1_121| Int) (|v_ULTIMATE.start_main_~q~0#1_72| Int)) (and (<= |v_ULTIMATE.start_main_~d~0#1_121| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_72| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_72| 2147483647) (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_121|)) (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_72| |v_ULTIMATE.start_main_~d~0#1_121|)) 0))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 50) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 05:05:24,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:05:24,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:05:24,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-09 05:05:24,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985588099] [2024-11-09 05:05:24,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:05:24,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:05:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:24,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:05:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 05:05:24,484 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:05:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:24,793 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2024-11-09 05:05:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:05:24,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 86 [2024-11-09 05:05:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:24,797 INFO L225 Difference]: With dead ends: 136 [2024-11-09 05:05:24,797 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 05:05:24,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 05:05:24,799 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:24,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:05:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 05:05:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-09 05:05:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 05:05:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-09 05:05:24,855 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 86 [2024-11-09 05:05:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:24,856 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-09 05:05:24,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 05:05:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-09 05:05:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 05:05:24,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:24,858 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 05:05:24,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 05:05:25,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 05:05:25,061 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:05:25,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -804474729, now seen corresponding path program 1 times [2024-11-09 05:05:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471335134] [2024-11-09 05:05:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:25,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471335134] [2024-11-09 05:05:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471335134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:05:25,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731272757] [2024-11-09 05:05:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:25,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:25,655 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:05:25,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 05:05:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:25,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:05:25,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:26,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:05:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:05:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731272757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:05:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [692764207] [2024-11-09 05:05:30,184 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:05:30,184 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:05:30,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:05:30,185 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:05:30,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:05:32,786 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:05:32,788 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:06:00,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11822#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 50) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 05:06:00,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:06:00,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:06:00,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 24 [2024-11-09 05:06:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132579604] [2024-11-09 05:06:00,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:06:00,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:06:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:00,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:06:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2117, Unknown=8, NotChecked=0, Total=2450 [2024-11-09 05:06:00,851 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 05:06:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:04,592 INFO L93 Difference]: Finished difference Result 384 states and 467 transitions. [2024-11-09 05:06:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:06:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) Word has length 92 [2024-11-09 05:06:04,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:04,595 INFO L225 Difference]: With dead ends: 384 [2024-11-09 05:06:04,595 INFO L226 Difference]: Without dead ends: 383 [2024-11-09 05:06:04,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 30.8s TimeCoverageRelationStatistics Valid=718, Invalid=4104, Unknown=8, NotChecked=0, Total=4830 [2024-11-09 05:06:04,597 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 614 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:04,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 588 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:06:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-09 05:06:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 215. [2024-11-09 05:06:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 177 states have (on average 1.11864406779661) internal successors, (198), 183 states have internal predecessors, (198), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:06:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2024-11-09 05:06:04,663 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 92 [2024-11-09 05:06:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2024-11-09 05:06:04,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 05:06:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2024-11-09 05:06:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:06:04,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:04,665 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:06:04,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 05:06:04,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:04,866 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:06:04,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash 831087290, now seen corresponding path program 1 times [2024-11-09 05:06:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:04,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382469746] [2024-11-09 05:06:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-09 05:06:05,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382469746] [2024-11-09 05:06:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382469746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490465304] [2024-11-09 05:06:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:05,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:05,221 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:05,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 05:06:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:05,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:06:05,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:06:05,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:06:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:06:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490465304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:06:10,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1283132345] [2024-11-09 05:06:10,826 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:06:10,826 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:06:10,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:06:10,827 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:06:10,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:06:13,191 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:06:13,194 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:06:43,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13175#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 50) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 05:06:43,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:06:43,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:06:43,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-11-09 05:06:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982832856] [2024-11-09 05:06:43,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:06:43,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:06:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:06:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1679, Unknown=9, NotChecked=0, Total=2070 [2024-11-09 05:06:43,352 INFO L87 Difference]: Start difference. First operand 215 states and 258 transitions. Second operand has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 05:06:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:44,131 INFO L93 Difference]: Finished difference Result 304 states and 369 transitions. [2024-11-09 05:06:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:06:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 93 [2024-11-09 05:06:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:44,133 INFO L225 Difference]: With dead ends: 304 [2024-11-09 05:06:44,134 INFO L226 Difference]: Without dead ends: 303 [2024-11-09 05:06:44,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=455, Invalid=1986, Unknown=9, NotChecked=0, Total=2450 [2024-11-09 05:06:44,136 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 244 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:44,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 253 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:06:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-09 05:06:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 214. [2024-11-09 05:06:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 177 states have (on average 1.1073446327683616) internal successors, (196), 182 states have internal predecessors, (196), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 05:06:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2024-11-09 05:06:44,197 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 93 [2024-11-09 05:06:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:44,198 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2024-11-09 05:06:44,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 05:06:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2024-11-09 05:06:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:06:44,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:44,199 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 05:06:44,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 05:06:44,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:44,403 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:06:44,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:44,403 INFO L85 PathProgramCache]: Analyzing trace with hash -6097671, now seen corresponding path program 1 times [2024-11-09 05:06:44,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:44,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962290868] [2024-11-09 05:06:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:06:44,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962290868] [2024-11-09 05:06:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962290868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553932638] [2024-11-09 05:06:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:44,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:44,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 05:06:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:45,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:06:45,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:06:45,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:06:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:06:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553932638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:06:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [195195383] [2024-11-09 05:06:48,382 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:06:48,382 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:06:48,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:06:48,383 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:06:48,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:06:53,318 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:06:53,320 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:22,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14417#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 05:07:22,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:22,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-09 05:07:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825006746] [2024-11-09 05:07:22,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:22,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 05:07:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 05:07:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1854, Unknown=6, NotChecked=0, Total=2256 [2024-11-09 05:07:22,904 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 05:07:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:26,401 INFO L93 Difference]: Finished difference Result 622 states and 750 transitions. [2024-11-09 05:07:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:07:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 94 [2024-11-09 05:07:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:26,406 INFO L225 Difference]: With dead ends: 622 [2024-11-09 05:07:26,406 INFO L226 Difference]: Without dead ends: 558 [2024-11-09 05:07:26,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=723, Invalid=3053, Unknown=6, NotChecked=0, Total=3782 [2024-11-09 05:07:26,409 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 390 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:26,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 483 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 05:07:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-09 05:07:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 429. [2024-11-09 05:07:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 363 states have (on average 1.1101928374655647) internal successors, (403), 368 states have internal predecessors, (403), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-09 05:07:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 521 transitions. [2024-11-09 05:07:26,581 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 521 transitions. Word has length 94 [2024-11-09 05:07:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:26,581 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 521 transitions. [2024-11-09 05:07:26,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 05:07:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 521 transitions. [2024-11-09 05:07:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 05:07:26,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:26,584 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 05:07:26,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 05:07:26,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:26,785 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:07:26,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:26,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2124516296, now seen corresponding path program 3 times [2024-11-09 05:07:26,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:26,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556640029] [2024-11-09 05:07:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 05:07:27,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556640029] [2024-11-09 05:07:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556640029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909427927] [2024-11-09 05:07:27,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:07:27,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:27,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:27,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 05:07:27,547 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:07:27,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:27,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:07:27,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-09 05:07:29,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:33,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909427927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:33,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [465210269] [2024-11-09 05:07:33,788 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:07:33,789 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:33,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:33,789 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:33,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:36,302 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:07:36,304 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:07:45,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16107#(exists ((|v_ULTIMATE.start_main_~r~0#1_87| Int) (|v_ULTIMATE.start_main_~q~0#1_96| Int) (|v_ULTIMATE.start_main_~B~0#1_47| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~B~0#1_47| 1) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |v_ULTIMATE.start_main_~q~0#1_96| 2147483647) (<= |v_ULTIMATE.start_main_~r~0#1_87| 2147483647) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_96| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |ULTIMATE.start_main_~A~0#1| 50) (<= 0 |ULTIMATE.start_main_~A~0#1|)))' at error location [2024-11-09 05:07:45,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:45,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:07:45,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-11-09 05:07:45,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621420917] [2024-11-09 05:07:45,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:45,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 05:07:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 05:07:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2428, Unknown=2, NotChecked=0, Total=2652 [2024-11-09 05:07:45,075 INFO L87 Difference]: Start difference. First operand 429 states and 521 transitions. Second operand has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 05:07:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:48,932 INFO L93 Difference]: Finished difference Result 648 states and 797 transitions. [2024-11-09 05:07:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 05:07:48,933 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 99 [2024-11-09 05:07:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:48,936 INFO L225 Difference]: With dead ends: 648 [2024-11-09 05:07:48,936 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 05:07:48,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=423, Invalid=4687, Unknown=2, NotChecked=0, Total=5112 [2024-11-09 05:07:48,940 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 275 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:48,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 397 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 05:07:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 05:07:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 552. [2024-11-09 05:07:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 472 states have (on average 1.1165254237288136) internal successors, (527), 477 states have internal predecessors, (527), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-09 05:07:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 673 transitions. [2024-11-09 05:07:49,137 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 673 transitions. Word has length 99 [2024-11-09 05:07:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:49,137 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 673 transitions. [2024-11-09 05:07:49,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 05:07:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 673 transitions. [2024-11-09 05:07:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 05:07:49,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:49,140 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:49,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 05:07:49,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:49,341 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:07:49,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -16241027, now seen corresponding path program 1 times [2024-11-09 05:07:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:49,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413505684] [2024-11-09 05:07:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:49,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:07:49,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413505684] [2024-11-09 05:07:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413505684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:49,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961782598] [2024-11-09 05:07:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:49,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:49,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:49,711 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:49,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 05:07:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:07:49,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:07:49,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 05:07:50,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:07:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961782598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:07:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:07:50,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-09 05:07:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565398726] [2024-11-09 05:07:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:07:50,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:07:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:07:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:07:50,332 INFO L87 Difference]: Start difference. First operand 552 states and 673 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 05:07:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:07:50,794 INFO L93 Difference]: Finished difference Result 650 states and 787 transitions. [2024-11-09 05:07:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:07:50,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2024-11-09 05:07:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:07:50,797 INFO L225 Difference]: With dead ends: 650 [2024-11-09 05:07:50,797 INFO L226 Difference]: Without dead ends: 463 [2024-11-09 05:07:50,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:07:50,799 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:07:50,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 168 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:07:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-09 05:07:50,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 407. [2024-11-09 05:07:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 343 states have (on average 1.119533527696793) internal successors, (384), 348 states have internal predecessors, (384), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-09 05:07:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 498 transitions. [2024-11-09 05:07:50,974 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 498 transitions. Word has length 105 [2024-11-09 05:07:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:07:50,974 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 498 transitions. [2024-11-09 05:07:50,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 05:07:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 498 transitions. [2024-11-09 05:07:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 05:07:50,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:07:50,977 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:07:51,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 05:07:51,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 05:07:51,178 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:07:51,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:07:51,179 INFO L85 PathProgramCache]: Analyzing trace with hash 922802609, now seen corresponding path program 2 times [2024-11-09 05:07:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:07:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481362646] [2024-11-09 05:07:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:07:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:07:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:07:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735520607] [2024-11-09 05:07:51,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:07:51,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:07:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:07:51,223 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:07:51,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 05:07:51,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:07:51,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:07:51,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:07:51,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:07:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-09 05:07:52,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:07:52,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:07:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481362646] [2024-11-09 05:07:52,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:07:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735520607] [2024-11-09 05:07:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735520607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:07:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140004666] [2024-11-09 05:07:52,739 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 05:07:52,739 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:07:52,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:07:52,740 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:07:52,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:07:58,696 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:07:58,698 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:08:03,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19549#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_main_~d~0#1_198| Int) (|v_ULTIMATE.start_main_~q~0#1_103| Int)) (and (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_103| |v_ULTIMATE.start_main_~d~0#1_198|)) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_103| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_103| 2147483647))))' at error location [2024-11-09 05:08:03,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:08:03,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:08:03,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 05:08:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246191456] [2024-11-09 05:08:03,845 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:08:03,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:08:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:08:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:08:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 05:08:03,846 INFO L87 Difference]: Start difference. First operand 407 states and 498 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 05:08:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:08:04,821 INFO L93 Difference]: Finished difference Result 423 states and 519 transitions. [2024-11-09 05:08:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:08:04,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 105 [2024-11-09 05:08:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:08:04,824 INFO L225 Difference]: With dead ends: 423 [2024-11-09 05:08:04,824 INFO L226 Difference]: Without dead ends: 422 [2024-11-09 05:08:04,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 05:08:04,825 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:08:04,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 154 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:08:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-09 05:08:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2024-11-09 05:08:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 348 states have (on average 1.1206896551724137) internal successors, (390), 353 states have internal predecessors, (390), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-09 05:08:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 508 transitions. [2024-11-09 05:08:04,933 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 508 transitions. Word has length 105 [2024-11-09 05:08:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:08:04,934 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 508 transitions. [2024-11-09 05:08:04,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 05:08:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 508 transitions. [2024-11-09 05:08:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:08:04,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:08:04,935 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:08:04,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 05:08:05,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 05:08:05,140 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:08:05,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:08:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1457890068, now seen corresponding path program 1 times [2024-11-09 05:08:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:08:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923834629] [2024-11-09 05:08:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:05,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:08:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:08:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275425934] [2024-11-09 05:08:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:05,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:05,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:05,166 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 05:08:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:05,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 05:08:05,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 05:08:06,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:08,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:08,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923834629] [2024-11-09 05:08:08,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:08:08,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275425934] [2024-11-09 05:08:08,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275425934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [492100845] [2024-11-09 05:08:08,534 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-09 05:08:08,535 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:08:08,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:08:08,535 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:08:08,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:08:10,433 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 05:08:10,534 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 05:08:13,871 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:08:13,873 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:08:24,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [492100845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:08:24,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:08:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [14] total 40 [2024-11-09 05:08:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470891698] [2024-11-09 05:08:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:08:24,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:08:24,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:08:24,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:08:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 05:08:24,156 INFO L87 Difference]: Start difference. First operand 414 states and 508 transitions. Second operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:08:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:08:28,426 INFO L93 Difference]: Finished difference Result 415 states and 509 transitions. [2024-11-09 05:08:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:08:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 106 [2024-11-09 05:08:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:08:28,429 INFO L225 Difference]: With dead ends: 415 [2024-11-09 05:08:28,429 INFO L226 Difference]: Without dead ends: 404 [2024-11-09 05:08:28,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=726, Invalid=2696, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 05:08:28,431 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 192 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:08:28,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 104 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:08:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-09 05:08:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 383. [2024-11-09 05:08:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 326 states have (on average 1.0797546012269938) internal successors, (352), 328 states have internal predecessors, (352), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-09 05:08:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 458 transitions. [2024-11-09 05:08:28,549 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 458 transitions. Word has length 106 [2024-11-09 05:08:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:08:28,550 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 458 transitions. [2024-11-09 05:08:28,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:08:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 458 transitions. [2024-11-09 05:08:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 05:08:28,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:08:28,552 INFO L215 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 05:08:28,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 05:08:28,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 05:08:28,756 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:08:28,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:08:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1296303017, now seen corresponding path program 4 times [2024-11-09 05:08:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:08:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909600905] [2024-11-09 05:08:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:08:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:08:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414347980] [2024-11-09 05:08:28,811 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:08:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:28,814 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:28,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 05:08:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:28,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 05:08:28,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-09 05:08:30,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:34,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909600905] [2024-11-09 05:08:34,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:08:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414347980] [2024-11-09 05:08:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414347980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379538350] [2024-11-09 05:08:34,500 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:08:34,501 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:08:34,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:08:34,501 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:08:34,501 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:08:39,394 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:08:39,396 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:09:26,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22025#true' at error location [2024-11-09 05:09:26,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:09:26,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-09 05:09:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568750809] [2024-11-09 05:09:26,182 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:09:26,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:09:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:09:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1932, Unknown=21, NotChecked=0, Total=2256 [2024-11-09 05:09:26,184 INFO L87 Difference]: Start difference. First operand 383 states and 458 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 05:09:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:28,975 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2024-11-09 05:09:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 05:09:28,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 116 [2024-11-09 05:09:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:28,977 INFO L225 Difference]: With dead ends: 468 [2024-11-09 05:09:28,977 INFO L226 Difference]: Without dead ends: 467 [2024-11-09 05:09:28,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=325, Invalid=2104, Unknown=21, NotChecked=0, Total=2450 [2024-11-09 05:09:28,978 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 52 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:28,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 440 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 05:09:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-09 05:09:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 417. [2024-11-09 05:09:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 356 states have (on average 1.0758426966292134) internal successors, (383), 358 states have internal predecessors, (383), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-09 05:09:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 497 transitions. [2024-11-09 05:09:29,168 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 497 transitions. Word has length 116 [2024-11-09 05:09:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:29,168 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 497 transitions. [2024-11-09 05:09:29,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 05:09:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 497 transitions. [2024-11-09 05:09:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 05:09:29,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:29,171 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:29,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 05:09:29,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:29,375 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:09:29,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1660981074, now seen corresponding path program 1 times [2024-11-09 05:09:29,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903340499] [2024-11-09 05:09:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:30,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:30,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903340499] [2024-11-09 05:09:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903340499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505342793] [2024-11-09 05:09:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:30,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:30,068 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:30,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 05:09:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:30,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:09:30,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 69 proven. 32 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:31,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505342793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:33,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [500318707] [2024-11-09 05:09:33,493 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:09:33,493 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:33,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:33,494 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:33,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:09:38,281 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:09:38,283 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:09:44,976 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23536#true' at error location [2024-11-09 05:09:44,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:09:44,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:09:44,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 27 [2024-11-09 05:09:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338279089] [2024-11-09 05:09:44,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:09:44,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:09:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:09:44,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2358, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:09:44,980 INFO L87 Difference]: Start difference. First operand 417 states and 497 transitions. Second operand has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 05:09:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:49,414 INFO L93 Difference]: Finished difference Result 814 states and 975 transitions. [2024-11-09 05:09:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 05:09:49,415 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) Word has length 128 [2024-11-09 05:09:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:49,418 INFO L225 Difference]: With dead ends: 814 [2024-11-09 05:09:49,418 INFO L226 Difference]: Without dead ends: 813 [2024-11-09 05:09:49,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 336 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3084 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1383, Invalid=6989, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 05:09:49,420 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 1086 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:49,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1278 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 05:09:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-09 05:09:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 361. [2024-11-09 05:09:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 307 states have (on average 1.0684039087947883) internal successors, (328), 308 states have internal predecessors, (328), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-09 05:09:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 430 transitions. [2024-11-09 05:09:49,552 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 430 transitions. Word has length 128 [2024-11-09 05:09:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:49,553 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 430 transitions. [2024-11-09 05:09:49,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 05:09:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 430 transitions. [2024-11-09 05:09:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 05:09:49,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:49,556 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:09:49,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 05:09:49,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-09 05:09:49,760 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:09:49,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1525025616, now seen corresponding path program 1 times [2024-11-09 05:09:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729883545] [2024-11-09 05:09:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:50,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729883545] [2024-11-09 05:09:50,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729883545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856818983] [2024-11-09 05:09:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:50,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:50,653 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:50,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 05:09:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:50,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 05:09:50,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:51,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:09:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856818983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:59,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401191965] [2024-11-09 05:09:59,652 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:09:59,652 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:59,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:59,652 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:59,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:01,414 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 05:10:01,479 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 05:10:04,702 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:10:04,703 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:10,952 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26639#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 05:10:10,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:10,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:10,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 30 [2024-11-09 05:10:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004954773] [2024-11-09 05:10:10,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 05:10:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 05:10:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2550, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 05:10:10,955 INFO L87 Difference]: Start difference. First operand 361 states and 430 transitions. Second operand has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 05:10:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:19,693 INFO L93 Difference]: Finished difference Result 840 states and 997 transitions. [2024-11-09 05:10:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:10:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) Word has length 130 [2024-11-09 05:10:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:19,697 INFO L225 Difference]: With dead ends: 840 [2024-11-09 05:10:19,697 INFO L226 Difference]: Without dead ends: 839 [2024-11-09 05:10:19,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1358, Invalid=5122, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 05:10:19,699 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 645 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:19,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 766 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-09 05:10:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-09 05:10:19,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 593. [2024-11-09 05:10:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 509 states have (on average 1.068762278978389) internal successors, (544), 510 states have internal predecessors, (544), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-09 05:10:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 706 transitions. [2024-11-09 05:10:19,995 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 706 transitions. Word has length 130 [2024-11-09 05:10:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:19,995 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 706 transitions. [2024-11-09 05:10:19,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 05:10:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 706 transitions. [2024-11-09 05:10:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 05:10:19,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:19,998 INFO L215 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 05:10:20,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:10:20,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 05:10:20,202 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:10:20,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1773347928, now seen corresponding path program 5 times [2024-11-09 05:10:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347710798] [2024-11-09 05:10:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:10:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198476560] [2024-11-09 05:10:20,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:10:20,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:20,240 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:20,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 05:10:20,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:10:20,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:20,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:10:20,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2024-11-09 05:10:23,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:34,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:34,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347710798] [2024-11-09 05:10:34,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:10:34,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198476560] [2024-11-09 05:10:34,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198476560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:10:34,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [582505547] [2024-11-09 05:10:34,080 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:10:34,080 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:34,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:34,080 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:34,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:39,279 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:10:39,280 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:26,022 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28436#true' at error location [2024-11-09 05:11:26,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:26,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:11:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-09 05:11:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420610619] [2024-11-09 05:11:26,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:26,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:11:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:11:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1471, Unknown=23, NotChecked=0, Total=1806 [2024-11-09 05:11:26,024 INFO L87 Difference]: Start difference. First operand 593 states and 706 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:11:27,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:27,591 INFO L93 Difference]: Finished difference Result 810 states and 964 transitions. [2024-11-09 05:11:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:11:27,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2024-11-09 05:11:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:27,593 INFO L225 Difference]: With dead ends: 810 [2024-11-09 05:11:27,594 INFO L226 Difference]: Without dead ends: 809 [2024-11-09 05:11:27,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=312, Invalid=1471, Unknown=23, NotChecked=0, Total=1806 [2024-11-09 05:11:27,594 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:27,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 141 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 05:11:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-09 05:11:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 636. [2024-11-09 05:11:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 546 states have (on average 1.0714285714285714) internal successors, (585), 547 states have internal predecessors, (585), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-09 05:11:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 759 transitions. [2024-11-09 05:11:27,925 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 759 transitions. Word has length 133 [2024-11-09 05:11:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:27,925 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 759 transitions. [2024-11-09 05:11:27,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:11:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 759 transitions. [2024-11-09 05:11:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 05:11:27,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:27,927 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 05:11:27,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:28,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-09 05:11:28,127 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:11:28,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash -686900159, now seen corresponding path program 1 times [2024-11-09 05:11:28,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:28,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785912440] [2024-11-09 05:11:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:11:28,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:28,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785912440] [2024-11-09 05:11:28,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785912440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:28,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792730742] [2024-11-09 05:11:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:28,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:28,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:28,884 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:28,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 05:11:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:28,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:11:28,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:11:30,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792730742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [935423707] [2024-11-09 05:11:31,449 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:11:31,449 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:31,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:31,449 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:31,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:36,055 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:11:36,057 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:43,255 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30665#true' at error location [2024-11-09 05:11:43,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:43,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:11:43,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-09 05:11:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740441486] [2024-11-09 05:11:43,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:43,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:11:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:11:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2428, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:11:43,258 INFO L87 Difference]: Start difference. First operand 636 states and 759 transitions. Second operand has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 05:11:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:48,236 INFO L93 Difference]: Finished difference Result 1177 states and 1396 transitions. [2024-11-09 05:11:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:11:48,236 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 135 [2024-11-09 05:11:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:48,240 INFO L225 Difference]: With dead ends: 1177 [2024-11-09 05:11:48,241 INFO L226 Difference]: Without dead ends: 1176 [2024-11-09 05:11:48,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=705, Invalid=5457, Unknown=0, NotChecked=0, Total=6162 [2024-11-09 05:11:48,242 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 422 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:48,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 826 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 05:11:48,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-09 05:11:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 581. [2024-11-09 05:11:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 499 states have (on average 1.0721442885771544) internal successors, (535), 500 states have internal predecessors, (535), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-09 05:11:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 693 transitions. [2024-11-09 05:11:48,471 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 693 transitions. Word has length 135 [2024-11-09 05:11:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:48,471 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 693 transitions. [2024-11-09 05:11:48,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 05:11:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 693 transitions. [2024-11-09 05:11:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 05:11:48,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:48,474 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-09 05:11:48,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:48,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 05:11:48,675 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:11:48,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -408499589, now seen corresponding path program 6 times [2024-11-09 05:11:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36716358] [2024-11-09 05:11:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 05:11:49,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36716358] [2024-11-09 05:11:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36716358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:49,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554069038] [2024-11-09 05:11:49,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:11:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:49,649 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 05:11:49,762 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:11:49,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:11:49,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 05:11:49,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 31 proven. 127 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-09 05:11:53,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:55,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554069038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:55,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798708243] [2024-11-09 05:11:55,955 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:11:55,955 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:55,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:55,956 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:55,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:58,021 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:11:58,023 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:11,835 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33822#(exists ((|v_ULTIMATE.start_main_~r~0#1_143| Int) (|v_ULTIMATE.start_main_~q~0#1_152| Int) (|v_ULTIMATE.start_main_~B~0#1_59| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_143|)) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_152| |v_ULTIMATE.start_main_~r~0#1_143|)) (= |v_ULTIMATE.start_main_~B~0#1_59| 1) (<= |ULTIMATE.start_main_~A~0#1| 50) (<= |v_ULTIMATE.start_main_~r~0#1_143| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_152| 2147483647)))' at error location [2024-11-09 05:12:11,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:11,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:12:11,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 32 [2024-11-09 05:12:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83346059] [2024-11-09 05:12:11,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:11,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 05:12:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 05:12:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3482, Unknown=2, NotChecked=0, Total=3782 [2024-11-09 05:12:11,837 INFO L87 Difference]: Start difference. First operand 581 states and 693 transitions. Second operand has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 05:12:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:17,473 INFO L93 Difference]: Finished difference Result 888 states and 1051 transitions. [2024-11-09 05:12:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:12:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) Word has length 139 [2024-11-09 05:12:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:17,475 INFO L225 Difference]: With dead ends: 888 [2024-11-09 05:12:17,475 INFO L226 Difference]: Without dead ends: 887 [2024-11-09 05:12:17,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 236 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=641, Invalid=7367, Unknown=2, NotChecked=0, Total=8010 [2024-11-09 05:12:17,477 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 322 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:17,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 693 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 05:12:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-09 05:12:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 619. [2024-11-09 05:12:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 533 states have (on average 1.0712945590994372) internal successors, (571), 534 states have internal predecessors, (571), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-09 05:12:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 737 transitions. [2024-11-09 05:12:17,748 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 737 transitions. Word has length 139 [2024-11-09 05:12:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:17,749 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 737 transitions. [2024-11-09 05:12:17,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 05:12:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 737 transitions. [2024-11-09 05:12:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 05:12:17,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:17,751 INFO L215 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 05:12:17,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 05:12:17,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 05:12:17,952 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:12:17,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -573229902, now seen corresponding path program 2 times [2024-11-09 05:12:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629791556] [2024-11-09 05:12:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 05:12:18,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629791556] [2024-11-09 05:12:18,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629791556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859516431] [2024-11-09 05:12:18,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:12:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:18,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:18,826 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:18,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 05:12:18,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:12:18,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:12:18,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:12:18,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-09 05:12:19,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:12:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859516431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:19,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:12:19,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2024-11-09 05:12:19,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228549711] [2024-11-09 05:12:19,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:19,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:12:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:12:19,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:12:19,906 INFO L87 Difference]: Start difference. First operand 619 states and 737 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:12:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:20,574 INFO L93 Difference]: Finished difference Result 629 states and 749 transitions. [2024-11-09 05:12:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:12:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 141 [2024-11-09 05:12:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:20,576 INFO L225 Difference]: With dead ends: 629 [2024-11-09 05:12:20,577 INFO L226 Difference]: Without dead ends: 628 [2024-11-09 05:12:20,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:12:20,578 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 55 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:20,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 28 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:12:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-09 05:12:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 318. [2024-11-09 05:12:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 263 states have (on average 1.064638783269962) internal successors, (280), 263 states have internal predecessors, (280), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-09 05:12:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2024-11-09 05:12:20,723 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 141 [2024-11-09 05:12:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:20,723 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2024-11-09 05:12:20,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:12:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2024-11-09 05:12:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-09 05:12:20,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:20,724 INFO L215 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2024-11-09 05:12:20,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 05:12:20,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 05:12:20,925 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 05:12:20,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1536717765, now seen corresponding path program 2 times [2024-11-09 05:12:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675052118] [2024-11-09 05:12:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-09 05:12:21,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675052118] [2024-11-09 05:12:21,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675052118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:21,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753734640] [2024-11-09 05:12:21,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:12:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:21,807 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:21,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 05:12:21,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:12:21,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:12:21,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:12:21,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-09 05:12:23,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:26,374 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_z_296 Int)) (or (< v_z_296 0) (forall ((v_y_296 Int)) (let ((.cse0 (* 2 v_y_296))) (let ((.cse4 (+ .cse0 v_z_296))) (or (forall ((v_y_294 Int)) (let ((.cse1 (* v_y_296 |c_ULTIMATE.start_main_~B~0#1|)) (.cse2 (* v_z_296 |c_ULTIMATE.start_main_~B~0#1|)) (.cse3 (* v_y_294 |c_ULTIMATE.start_main_~B~0#1|))) (or (< 0 (+ .cse0 v_z_296 (* 2 v_y_294) 1)) (< |c_ULTIMATE.start_main_~r~0#1| (+ .cse1 (div .cse2 2) .cse3)) (< (+ v_y_294 |c_ULTIMATE.start_main_~q~0#1|) 2147483647) (< (+ (* .cse1 2) .cse2 (* 2 .cse3)) 0)))) (< .cse4 0) (< 1 .cse4))))) (= v_z_296 0) (< 1 v_z_296))) (forall ((v_z_292 Int)) (or (forall ((v_y_292 Int)) (or (< |c_ULTIMATE.start_main_~r~0#1| (+ (* v_y_292 |c_ULTIMATE.start_main_~B~0#1|) (div (* v_z_292 |c_ULTIMATE.start_main_~B~0#1|) 2) 1)) (< (+ v_y_292 |c_ULTIMATE.start_main_~q~0#1|) 2147483648) (= (+ (* 2 v_y_292) v_z_292) 1))) (< 1 v_z_292) (< v_z_292 0))) (forall ((v_z_296 Int)) (or (forall ((v_y_296 Int)) (let ((.cse5 (* 2 v_y_296))) (let ((.cse6 (+ .cse5 v_z_296))) (or (forall ((v_y_294 Int)) (or (< 0 (+ .cse5 v_z_296 (* 2 v_y_294) 1)) (< |c_ULTIMATE.start_main_~r~0#1| (+ (* v_y_296 |c_ULTIMATE.start_main_~B~0#1|) (div (* v_z_296 |c_ULTIMATE.start_main_~B~0#1|) 2) (* v_y_294 |c_ULTIMATE.start_main_~B~0#1|) 1)) (< (+ v_y_294 |c_ULTIMATE.start_main_~q~0#1|) 2147483647))) (< .cse6 0) (< 1 .cse6))))) (< v_z_296 0) (= v_z_296 0) (< 1 v_z_296))) (forall ((v_z_292 Int)) (let ((.cse7 (* v_z_292 |c_ULTIMATE.start_main_~B~0#1|))) (or (not (= (mod .cse7 2) 0)) (< 1 v_z_292) (forall ((v_y_292 Int)) (or (< (+ v_y_292 |c_ULTIMATE.start_main_~q~0#1|) 2147483648) (= (+ (* 2 v_y_292) v_z_292) 1) (< |c_ULTIMATE.start_main_~r~0#1| (+ (* v_y_292 |c_ULTIMATE.start_main_~B~0#1|) (div .cse7 2))))) (< v_z_292 0)))) (forall ((v_z_296 Int)) (let ((.cse10 (* v_z_296 |c_ULTIMATE.start_main_~B~0#1|))) (or (< v_z_296 0) (= v_z_296 0) (< 1 v_z_296) (forall ((v_y_294 Int) (v_y_296 Int)) (let ((.cse8 (* 2 v_y_296))) (let ((.cse9 (+ .cse8 v_z_296))) (or (< 0 (+ .cse8 v_z_296 (* 2 v_y_294) 1)) (< .cse9 0) (< |c_ULTIMATE.start_main_~r~0#1| (+ (* v_y_296 |c_ULTIMATE.start_main_~B~0#1|) (div .cse10 2) (* v_y_294 |c_ULTIMATE.start_main_~B~0#1|))) (< (+ v_y_294 |c_ULTIMATE.start_main_~q~0#1|) 2147483647) (< 1 .cse9))))) (not (= (mod .cse10 2) 0))))) (forall ((v_z_292 Int)) (or (< 1 v_z_292) (< v_z_292 0) (forall ((v_y_292 Int)) (let ((.cse11 (* v_y_292 |c_ULTIMATE.start_main_~B~0#1|)) (.cse12 (* v_z_292 |c_ULTIMATE.start_main_~B~0#1|))) (or (< (+ (* 2 .cse11) .cse12) 0) (< (+ v_y_292 |c_ULTIMATE.start_main_~q~0#1|) 2147483648) (= (+ (* 2 v_y_292) v_z_292) 1) (< |c_ULTIMATE.start_main_~r~0#1| (+ .cse11 (div .cse12 2))))))))) is different from false [2024-11-09 05:12:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753734640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [80426631] [2024-11-09 05:12:26,386 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 05:12:26,387 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:26,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:26,388 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:26,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:28,520 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:12:28,521 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:52,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37824#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 50) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 05:12:52,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:52,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:12:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2024-11-09 05:12:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262511918] [2024-11-09 05:12:52,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:52,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:12:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:12:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=2356, Unknown=7, NotChecked=104, Total=2970 [2024-11-09 05:12:52,733 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-09 05:12:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:59,314 INFO L93 Difference]: Finished difference Result 545 states and 650 transitions. [2024-11-09 05:12:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 05:12:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) Word has length 151 [2024-11-09 05:12:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:59,316 INFO L225 Difference]: With dead ends: 545 [2024-11-09 05:12:59,316 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:12:59,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 265 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4522 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=2211, Invalid=9996, Unknown=7, NotChecked=218, Total=12432 [2024-11-09 05:12:59,323 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 770 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:59,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 154 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 05:12:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:12:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:12:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:12:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:12:59,324 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2024-11-09 05:12:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:59,324 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:12:59,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-09 05:12:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:12:59,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:12:59,327 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-09 05:12:59,327 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-09 05:12:59,328 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-09 05:12:59,328 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-09 05:12:59,328 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-09 05:12:59,328 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-09 05:12:59,328 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-09 05:12:59,329 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-09 05:12:59,330 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-09 05:12:59,331 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-09 05:12:59,331 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-09 05:12:59,331 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-09 05:12:59,331 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-09 05:12:59,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 05:12:59,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08fc7b75-3a98-433c-9c87-e03358b365d1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 05:12:59,538 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:59,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.