./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.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_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/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_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/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_7e456c51-2002-43e3-8c81-1fbfa83e395d/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 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:34:52,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:34:52,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 05:34:52,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:34:52,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:34:52,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:34:52,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:34:52,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:34:52,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:34:52,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:34:52,269 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:34:52,269 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:34:52,269 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:34:52,270 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:34:52,270 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:34:52,270 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:34:52,271 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:34:52,275 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:34:52,276 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:34:52,276 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:34:52,276 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:34:52,280 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:34:52,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:34:52,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:34:52,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:34:52,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:34:52,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:34:52,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:34:52,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:34:52,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:34:52,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:34:52,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:34:52,288 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:34:52,288 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:34:52,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:34:52,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:34:52,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:34:52,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:34:52,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:34:52,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:34:52,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:34:52,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:34:52,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:34:52,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:34:52,293 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:34:52,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:34:52,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:34:52,294 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:34:52,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:34:52,294 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_7e456c51-2002-43e3-8c81-1fbfa83e395d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 [2024-11-09 05:34:52,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:34:52,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:34:52,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:34:52,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:34:52,715 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:34:52,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c Unable to find full path for "g++" [2024-11-09 05:34:54,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:34:54,983 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:34:54,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2024-11-09 05:34:54,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/data/ca15433a0/2d38b77fb3044db0841f8483bff15a63/FLAG7d966fca4 [2024-11-09 05:34:55,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/data/ca15433a0/2d38b77fb3044db0841f8483bff15a63 [2024-11-09 05:34:55,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:34:55,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:34:55,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:34:55,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:34:55,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:34:55,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f2633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55, skipping insertion in model container [2024-11-09 05:34:55,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:34:55,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:34:55,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:34:55,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:34:55,325 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:34:55,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55 WrapperNode [2024-11-09 05:34:55,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:34:55,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:34:55,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:34:55,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:34:55,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,355 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 19 [2024-11-09 05:34:55,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:34:55,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:34:55,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:34:55,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:34:55,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:34:55,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:34:55,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:34:55,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:34:55,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (1/1) ... [2024-11-09 05:34:55,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:34:55,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:34:55,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:34:55,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:34:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:34:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:34:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:34:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:34:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-09 05:34:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-09 05:34:55,550 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:34:55,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:34:55,713 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-09 05:34:55,714 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:34:55,773 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:34:55,774 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:34:55,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:34:55 BoogieIcfgContainer [2024-11-09 05:34:55,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:34:55,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:34:55,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:34:55,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:34:55,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:34:55" (1/3) ... [2024-11-09 05:34:55,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f96f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:34:55, skipping insertion in model container [2024-11-09 05:34:55,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:34:55" (2/3) ... [2024-11-09 05:34:55,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f96f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:34:55, skipping insertion in model container [2024-11-09 05:34:55,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:34:55" (3/3) ... [2024-11-09 05:34:55,788 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2024-11-09 05:34:55,810 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:34:55,811 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 05:34:55,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:34:55,905 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;@6cbda307, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:34:55,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 05:34:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:34:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:34:55,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:55,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:34:55,923 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:55,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 63799541, now seen corresponding path program 1 times [2024-11-09 05:34:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:55,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138791543] [2024-11-09 05:34:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:56,169 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 05:34:56,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138791543] [2024-11-09 05:34:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138791543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:34:56,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:34:56,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:34:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788167011] [2024-11-09 05:34:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:34:56,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:34:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:34:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:34:56,206 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:56,310 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-11-09 05:34:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:34:56,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 05:34:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:56,319 INFO L225 Difference]: With dead ends: 36 [2024-11-09 05:34:56,319 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:34:56,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:34:56,326 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:56,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:34:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:34:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-09 05:34:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:34:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-09 05:34:56,382 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2024-11-09 05:34:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:56,383 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-09 05:34:56,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-09 05:34:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:34:56,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:56,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 05:34:56,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:34:56,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:56,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1708859346, now seen corresponding path program 1 times [2024-11-09 05:34:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:56,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977333100] [2024-11-09 05:34:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:56,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:56,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977333100] [2024-11-09 05:34:56,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977333100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:56,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988741382] [2024-11-09 05:34:56,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:56,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:34:56,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:34:56,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:34:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:34:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:56,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:34:56,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:56,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:56,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:34:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988741382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:34:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147716709] [2024-11-09 05:34:56,900 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 05:34:56,902 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:34:56,908 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:34:56,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:34:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-09 05:34:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072819640] [2024-11-09 05:34:56,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:34:56,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:34:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:34:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:34:56,915 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:57,225 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2024-11-09 05:34:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:34:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 05:34:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:57,228 INFO L225 Difference]: With dead ends: 79 [2024-11-09 05:34:57,228 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:34:57,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:34:57,254 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 92 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:57,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 106 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:34:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:34:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2024-11-09 05:34:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.425) internal successors, (57), 43 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:34:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-11-09 05:34:57,289 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 10 [2024-11-09 05:34:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:57,290 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-11-09 05:34:57,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:57,290 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-11-09 05:34:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:34:57,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:57,291 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:34:57,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:34:57,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:34:57,497 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:57,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1435032229, now seen corresponding path program 1 times [2024-11-09 05:34:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:57,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783404735] [2024-11-09 05:34:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:57,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783404735] [2024-11-09 05:34:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783404735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423623532] [2024-11-09 05:34:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:57,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:34:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:34:57,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:34:57,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:34:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:57,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:34:57,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:57,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:34:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423623532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:34:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:34:57,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-09 05:34:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987982789] [2024-11-09 05:34:57,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:34:57,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:34:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:34:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:34:57,828 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:57,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:57,944 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2024-11-09 05:34:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:34:57,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 05:34:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:57,952 INFO L225 Difference]: With dead ends: 62 [2024-11-09 05:34:57,953 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 05:34:57,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:34:57,956 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:57,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 30 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:34:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 05:34:57,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2024-11-09 05:34:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:34:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-09 05:34:57,983 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 11 [2024-11-09 05:34:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:57,984 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-09 05:34:57,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-09 05:34:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:34:57,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:57,985 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:34:58,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:34:58,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 05:34:58,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:58,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1465280389, now seen corresponding path program 1 times [2024-11-09 05:34:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919000928] [2024-11-09 05:34:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:34:58,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:58,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919000928] [2024-11-09 05:34:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919000928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:34:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:34:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:34:58,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396698455] [2024-11-09 05:34:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:34:58,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:34:58,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:34:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:34:58,255 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:34:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:58,283 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2024-11-09 05:34:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:34:58,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 05:34:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:58,287 INFO L225 Difference]: With dead ends: 73 [2024-11-09 05:34:58,288 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:34:58,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:34:58,290 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:58,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:34:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:34:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-09 05:34:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 05:34:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2024-11-09 05:34:58,313 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2024-11-09 05:34:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:58,314 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2024-11-09 05:34:58,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:34:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2024-11-09 05:34:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 05:34:58,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:58,315 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 05:34:58,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:34:58,316 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:58,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2013219646, now seen corresponding path program 1 times [2024-11-09 05:34:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:58,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583288328] [2024-11-09 05:34:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:34:58,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:58,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583288328] [2024-11-09 05:34:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583288328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:34:58,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:34:58,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:34:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883171204] [2024-11-09 05:34:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:34:58,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:34:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:34:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:34:58,369 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:34:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:58,391 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-09 05:34:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:34:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-09 05:34:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:58,396 INFO L225 Difference]: With dead ends: 71 [2024-11-09 05:34:58,397 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 05:34:58,397 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 05:34:58,398 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:58,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:34:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 05:34:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-09 05:34:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-09 05:34:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-11-09 05:34:58,427 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2024-11-09 05:34:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:58,427 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-11-09 05:34:58,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:34:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-11-09 05:34:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:34:58,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:58,428 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2024-11-09 05:34:58,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:34:58,429 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:58,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1685904693, now seen corresponding path program 2 times [2024-11-09 05:34:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:58,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127523938] [2024-11-09 05:34:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:58,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:34:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:34:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:58,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:34:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127523938] [2024-11-09 05:34:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127523938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:34:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491236996] [2024-11-09 05:34:58,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:34:58,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:34:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:34:58,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:34:58,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:34:58,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:34:58,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:34:58,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:34:58,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:34:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:58,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:34:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:34:59,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491236996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:34:59,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662959380] [2024-11-09 05:34:59,238 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 05:34:59,241 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:34:59,241 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:34:59,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:34:59,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-09 05:34:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261537810] [2024-11-09 05:34:59,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:34:59,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:34:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:34:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:34:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-09 05:34:59,247 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:34:59,756 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2024-11-09 05:34:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 05:34:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 05:34:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:34:59,757 INFO L225 Difference]: With dead ends: 187 [2024-11-09 05:34:59,758 INFO L226 Difference]: Without dead ends: 155 [2024-11-09 05:34:59,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=991, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 05:34:59,759 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 226 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:34:59,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 219 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:34:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-09 05:34:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2024-11-09 05:34:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-09 05:34:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2024-11-09 05:34:59,789 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2024-11-09 05:34:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:34:59,789 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2024-11-09 05:34:59,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 15 states have internal predecessors, (45), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:34:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2024-11-09 05:34:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:34:59,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:34:59,791 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:34:59,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:34:59,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:34:59,996 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:34:59,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:34:59,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1776865054, now seen corresponding path program 1 times [2024-11-09 05:34:59,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:34:59,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831594178] [2024-11-09 05:34:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:34:59,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 05:35:00,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831594178] [2024-11-09 05:35:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831594178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253944667] [2024-11-09 05:35:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:00,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:00,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:00,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:00,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:35:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:00,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:35:00,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:35:00,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:35:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253944667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1516003428] [2024-11-09 05:35:00,941 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:35:00,942 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:00,942 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:00,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2024-11-09 05:35:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140192495] [2024-11-09 05:35:00,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:00,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:35:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:35:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:35:00,946 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 05:35:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:01,595 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2024-11-09 05:35:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 05:35:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2024-11-09 05:35:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:01,598 INFO L225 Difference]: With dead ends: 207 [2024-11-09 05:35:01,598 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 05:35:01,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 05:35:01,601 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 148 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:01,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 327 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:35:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 05:35:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2024-11-09 05:35:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2024-11-09 05:35:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2024-11-09 05:35:01,621 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2024-11-09 05:35:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:01,622 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2024-11-09 05:35:01,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 05:35:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2024-11-09 05:35:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 05:35:01,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:01,624 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2024-11-09 05:35:01,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:01,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:35:01,829 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:01,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2091957141, now seen corresponding path program 3 times [2024-11-09 05:35:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870507023] [2024-11-09 05:35:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:02,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870507023] [2024-11-09 05:35:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870507023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:02,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548989526] [2024-11-09 05:35:02,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:35:02,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:02,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:02,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:35:02,609 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:35:02,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:35:02,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 05:35:02,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:02,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548989526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506747494] [2024-11-09 05:35:03,588 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 05:35:03,589 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:03,589 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:03,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 49 [2024-11-09 05:35:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96358401] [2024-11-09 05:35:03,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 05:35:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 05:35:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 05:35:03,594 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:35:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:04,624 INFO L93 Difference]: Finished difference Result 437 states and 469 transitions. [2024-11-09 05:35:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 05:35:04,625 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-09 05:35:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:04,627 INFO L225 Difference]: With dead ends: 437 [2024-11-09 05:35:04,628 INFO L226 Difference]: Without dead ends: 385 [2024-11-09 05:35:04,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1391, Invalid=3865, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 05:35:04,631 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 799 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:04,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 614 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:35:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-09 05:35:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2024-11-09 05:35:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.1206896551724137) internal successors, (325), 289 states have internal predecessors, (325), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2024-11-09 05:35:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 399 transitions. [2024-11-09 05:35:04,665 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 399 transitions. Word has length 55 [2024-11-09 05:35:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:04,666 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 399 transitions. [2024-11-09 05:35:04,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 27 states have internal predecessors, (93), 24 states have call successors, (24), 23 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:35:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 399 transitions. [2024-11-09 05:35:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 05:35:04,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:04,672 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-09 05:35:04,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:35:04,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:04,873 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:04,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:04,874 INFO L85 PathProgramCache]: Analyzing trace with hash -543530731, now seen corresponding path program 2 times [2024-11-09 05:35:04,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:04,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518383642] [2024-11-09 05:35:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:04,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:35:05,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:05,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518383642] [2024-11-09 05:35:05,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518383642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:05,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288282440] [2024-11-09 05:35:05,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:35:05,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:05,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:05,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:35:05,536 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 05:35:05,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:35:05,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:35:05,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-09 05:35:05,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-09 05:35:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288282440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319004525] [2024-11-09 05:35:06,007 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:35:06,007 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:06,008 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:06,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 37 [2024-11-09 05:35:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614317190] [2024-11-09 05:35:06,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:06,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 05:35:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:06,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 05:35:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 05:35:06,013 INFO L87 Difference]: Start difference. First operand 363 states and 399 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:35:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:07,172 INFO L93 Difference]: Finished difference Result 720 states and 820 transitions. [2024-11-09 05:35:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 05:35:07,173 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2024-11-09 05:35:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:07,177 INFO L225 Difference]: With dead ends: 720 [2024-11-09 05:35:07,178 INFO L226 Difference]: Without dead ends: 664 [2024-11-09 05:35:07,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=548, Invalid=3874, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 05:35:07,181 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 296 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:07,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 325 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:35:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-09 05:35:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 655. [2024-11-09 05:35:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 526 states have (on average 1.064638783269962) internal successors, (560), 521 states have internal predecessors, (560), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2024-11-09 05:35:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 694 transitions. [2024-11-09 05:35:07,228 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 694 transitions. Word has length 74 [2024-11-09 05:35:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:07,229 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 694 transitions. [2024-11-09 05:35:07,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:35:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 694 transitions. [2024-11-09 05:35:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 05:35:07,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:07,232 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2024-11-09 05:35:07,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:35:07,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:35:07,437 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:07,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1298496232, now seen corresponding path program 3 times [2024-11-09 05:35:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:07,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132810830] [2024-11-09 05:35:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:07,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 05:35:08,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132810830] [2024-11-09 05:35:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132810830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:08,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719110698] [2024-11-09 05:35:08,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:35:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:08,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:08,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:35:08,199 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:35:08,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:35:08,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:35:08,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 05:35:08,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:35:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719110698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869635411] [2024-11-09 05:35:11,622 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:35:11,622 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:11,622 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:11,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 29] total 38 [2024-11-09 05:35:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396164409] [2024-11-09 05:35:11,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:11,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 05:35:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:11,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 05:35:11,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1139, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:35:11,628 INFO L87 Difference]: Start difference. First operand 655 states and 694 transitions. Second operand has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-09 05:35:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:12,329 INFO L93 Difference]: Finished difference Result 732 states and 770 transitions. [2024-11-09 05:35:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 05:35:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 99 [2024-11-09 05:35:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:12,335 INFO L225 Difference]: With dead ends: 732 [2024-11-09 05:35:12,335 INFO L226 Difference]: Without dead ends: 601 [2024-11-09 05:35:12,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 174 SyntacticMatches, 15 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=545, Invalid=2107, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 05:35:12,338 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 217 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:12,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 482 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:35:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-09 05:35:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 565. [2024-11-09 05:35:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 454 states have (on average 1.0682819383259912) internal successors, (485), 449 states have internal predecessors, (485), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2024-11-09 05:35:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 601 transitions. [2024-11-09 05:35:12,396 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 601 transitions. Word has length 99 [2024-11-09 05:35:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:12,397 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 601 transitions. [2024-11-09 05:35:12,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.8) internal successors, (98), 28 states have internal predecessors, (98), 19 states have call successors, (20), 10 states have call predecessors, (20), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-09 05:35:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 601 transitions. [2024-11-09 05:35:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 05:35:12,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:12,401 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2024-11-09 05:35:12,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:35:12,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:35:12,602 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:12,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:12,603 INFO L85 PathProgramCache]: Analyzing trace with hash 764821589, now seen corresponding path program 4 times [2024-11-09 05:35:12,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:12,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780763445] [2024-11-09 05:35:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:12,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:15,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780763445] [2024-11-09 05:35:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780763445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826338475] [2024-11-09 05:35:15,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:35:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:15,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:35:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:15,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 05:35:15,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:15,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:35:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826338475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [87175248] [2024-11-09 05:35:19,205 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 05:35:19,205 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:19,206 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:19,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 97 [2024-11-09 05:35:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654425834] [2024-11-09 05:35:19,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:19,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-09 05:35:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-09 05:35:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2360, Invalid=7342, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 05:35:19,218 INFO L87 Difference]: Start difference. First operand 565 states and 601 transitions. Second operand has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:35:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:20,551 INFO L93 Difference]: Finished difference Result 580 states and 601 transitions. [2024-11-09 05:35:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 05:35:20,552 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-09 05:35:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:20,556 INFO L225 Difference]: With dead ends: 580 [2024-11-09 05:35:20,557 INFO L226 Difference]: Without dead ends: 579 [2024-11-09 05:35:20,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3827, Invalid=9513, Unknown=0, NotChecked=0, Total=13340 [2024-11-09 05:35:20,563 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 471 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:20,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 511 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:35:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-09 05:35:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 564. [2024-11-09 05:35:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 454 states have (on average 1.066079295154185) internal successors, (484), 448 states have internal predecessors, (484), 24 states have call successors, (24), 23 states have call predecessors, (24), 85 states have return successors, (92), 92 states have call predecessors, (92), 23 states have call successors, (92) [2024-11-09 05:35:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 600 transitions. [2024-11-09 05:35:20,621 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 600 transitions. Word has length 115 [2024-11-09 05:35:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:20,622 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 600 transitions. [2024-11-09 05:35:20,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 51 states have internal predecessors, (189), 48 states have call successors, (48), 47 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:35:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 600 transitions. [2024-11-09 05:35:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 05:35:20,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:20,626 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2024-11-09 05:35:20,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:20,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:20,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:20,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1224465131, now seen corresponding path program 4 times [2024-11-09 05:35:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:20,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899914873] [2024-11-09 05:35:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:21,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:21,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899914873] [2024-11-09 05:35:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899914873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652694433] [2024-11-09 05:35:21,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:35:21,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:21,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:21,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:21,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:35:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:21,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:35:21,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:21,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652694433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:24,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [946861838] [2024-11-09 05:35:24,332 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:35:24,332 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:24,332 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:24,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:24,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-09 05:35:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015465352] [2024-11-09 05:35:24,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:24,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 05:35:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 05:35:24,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:35:24,338 INFO L87 Difference]: Start difference. First operand 564 states and 600 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-09 05:35:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:24,596 INFO L93 Difference]: Finished difference Result 1289 states and 1480 transitions. [2024-11-09 05:35:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:35:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2024-11-09 05:35:24,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:24,609 INFO L225 Difference]: With dead ends: 1289 [2024-11-09 05:35:24,610 INFO L226 Difference]: Without dead ends: 1288 [2024-11-09 05:35:24,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:35:24,613 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:24,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:35:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-11-09 05:35:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2024-11-09 05:35:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1038 states have (on average 1.0289017341040463) internal successors, (1068), 1024 states have internal predecessors, (1068), 24 states have call successors, (24), 23 states have call predecessors, (24), 225 states have return successors, (240), 240 states have call predecessors, (240), 23 states have call successors, (240) [2024-11-09 05:35:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1332 transitions. [2024-11-09 05:35:24,759 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1332 transitions. Word has length 114 [2024-11-09 05:35:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:24,760 INFO L471 AbstractCegarLoop]: Abstraction has 1288 states and 1332 transitions. [2024-11-09 05:35:24,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-09 05:35:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1332 transitions. [2024-11-09 05:35:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-09 05:35:24,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:24,766 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2024-11-09 05:35:24,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:35:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:24,971 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:24,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1071068565, now seen corresponding path program 5 times [2024-11-09 05:35:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892159876] [2024-11-09 05:35:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:24,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:26,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:26,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892159876] [2024-11-09 05:35:26,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892159876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4163951] [2024-11-09 05:35:26,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:35:26,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:26,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:26,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:35:26,883 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-09 05:35:26,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:35:26,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 05:35:26,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:35:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:27,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:35:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-09 05:35:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4163951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:35:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1407257184] [2024-11-09 05:35:49,910 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:35:49,910 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:35:49,911 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:35:49,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:35:49,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2024-11-09 05:35:49,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419085851] [2024-11-09 05:35:49,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:35:49,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 05:35:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:35:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 05:35:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 05:35:49,920 INFO L87 Difference]: Start difference. First operand 1288 states and 1332 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-09 05:35:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:35:50,492 INFO L93 Difference]: Finished difference Result 3097 states and 3508 transitions. [2024-11-09 05:35:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 05:35:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 154 [2024-11-09 05:35:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:35:50,503 INFO L225 Difference]: With dead ends: 3097 [2024-11-09 05:35:50,503 INFO L226 Difference]: Without dead ends: 1494 [2024-11-09 05:35:50,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 05:35:50,511 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:35:50,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:35:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2024-11-09 05:35:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2024-11-09 05:35:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1207 states have (on average 1.0190555095277547) internal successors, (1230), 1186 states have internal predecessors, (1230), 24 states have call successors, (24), 23 states have call predecessors, (24), 262 states have return successors, (284), 284 states have call predecessors, (284), 23 states have call successors, (284) [2024-11-09 05:35:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1538 transitions. [2024-11-09 05:35:50,684 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1538 transitions. Word has length 154 [2024-11-09 05:35:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:35:50,684 INFO L471 AbstractCegarLoop]: Abstraction has 1494 states and 1538 transitions. [2024-11-09 05:35:50,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-09 05:35:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1538 transitions. [2024-11-09 05:35:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-09 05:35:50,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:35:50,700 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 31, 31, 31, 31, 30, 1, 1, 1, 1] [2024-11-09 05:35:50,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:35:50,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:50,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-09 05:35:50,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:35:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -530932168, now seen corresponding path program 6 times [2024-11-09 05:35:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:35:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102980936] [2024-11-09 05:35:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:35:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:35:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:35:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 7263 trivial. 0 not checked. [2024-11-09 05:35:56,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:35:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102980936] [2024-11-09 05:35:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102980936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:35:56,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560236444] [2024-11-09 05:35:56,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:35:56,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:35:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:35:56,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:35:56,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:35:57,385 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:35:57,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:35:57,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-09 05:35:57,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:36:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 3648 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2024-11-09 05:36:03,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 5418 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-11-09 05:40:27,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560236444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:40:27,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357887101] [2024-11-09 05:40:27,151 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-09 05:40:27,151 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:40:27,152 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 05:40:27,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:40:27,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 83, 113] total 225 [2024-11-09 05:40:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219474208] [2024-11-09 05:40:27,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:40:27,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2024-11-09 05:40:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:27,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2024-11-09 05:40:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5234, Invalid=45166, Unknown=0, NotChecked=0, Total=50400 [2024-11-09 05:40:27,173 INFO L87 Difference]: Start difference. First operand 1494 states and 1538 transitions. Second operand has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2024-11-09 05:40:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:30,335 INFO L93 Difference]: Finished difference Result 1494 states and 1538 transitions. [2024-11-09 05:40:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 05:40:30,336 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 429 [2024-11-09 05:40:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:30,337 INFO L225 Difference]: With dead ends: 1494 [2024-11-09 05:40:30,338 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:40:30,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 665 SyntacticMatches, 31 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28749 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=8077, Invalid=53675, Unknown=0, NotChecked=0, Total=61752 [2024-11-09 05:40:30,349 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 108 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:30,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 40 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:40:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:40:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:40:30,351 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 05:40:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:40:30,351 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 429 [2024-11-09 05:40:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:30,352 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:40:30,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2024-11-09 05:40:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:40:30,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:40:30,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 05:40:30,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 05:40:30,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 05:40:30,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 05:40:30,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:40:30,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:30,562 INFO L407 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1, 1, 1] [2024-11-09 05:40:30,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:40:34,364 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:40:34,442 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:40:34,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:40:34 BoogieIcfgContainer [2024-11-09 05:40:34,449 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:40:34,450 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:40:34,450 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:40:34,450 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:40:34,451 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:34:55" (3/4) ... [2024-11-09 05:40:34,454 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:40:34,458 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2024-11-09 05:40:34,461 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-09 05:40:34,462 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:40:34,462 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 05:40:34,462 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:40:34,553 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:40:34,556 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:40:34,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:40:34,557 INFO L158 Benchmark]: Toolchain (without parser) took 339542.25ms. Allocated memory was 148.9MB in the beginning and 545.3MB in the end (delta: 396.4MB). Free memory was 119.5MB in the beginning and 214.8MB in the end (delta: -95.3MB). Peak memory consumption was 300.3MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,557 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 148.9MB. Free memory was 117.3MB in the beginning and 117.1MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:40:34,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.28ms. Allocated memory is still 148.9MB. Free memory was 119.5MB in the beginning and 114.0MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.09ms. Allocated memory is still 148.9MB. Free memory was 114.0MB in the beginning and 112.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,558 INFO L158 Benchmark]: Boogie Preprocessor took 17.65ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 111.3MB in the end (delta: 871.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,558 INFO L158 Benchmark]: RCFGBuilder took 400.57ms. Allocated memory is still 148.9MB. Free memory was 111.3MB in the beginning and 100.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,559 INFO L158 Benchmark]: TraceAbstraction took 338670.69ms. Allocated memory was 148.9MB in the beginning and 545.3MB in the end (delta: 396.4MB). Free memory was 99.7MB in the beginning and 219.0MB in the end (delta: -119.3MB). Peak memory consumption was 341.7MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,560 INFO L158 Benchmark]: Witness Printer took 106.22ms. Allocated memory is still 545.3MB. Free memory was 219.0MB in the beginning and 214.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:40:34,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 148.9MB. Free memory was 117.3MB in the beginning and 117.1MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.28ms. Allocated memory is still 148.9MB. Free memory was 119.5MB in the beginning and 114.0MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.09ms. Allocated memory is still 148.9MB. Free memory was 114.0MB in the beginning and 112.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.65ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 111.3MB in the end (delta: 871.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.57ms. Allocated memory is still 148.9MB. Free memory was 111.3MB in the beginning and 100.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 338670.69ms. Allocated memory was 148.9MB in the beginning and 545.3MB in the end (delta: 396.4MB). Free memory was 99.7MB in the beginning and 219.0MB in the end (delta: -119.3MB). Peak memory consumption was 341.7MB. Max. memory is 16.1GB. * Witness Printer took 106.22ms. Allocated memory is still 545.3MB. Free memory was 219.0MB in the beginning and 214.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 334.7s, OverallIterations: 14, TraceHistogramMax: 55, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2430 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2408 mSDsluCounter, 2917 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2539 mSDsCounter, 290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5346 IncrementalHoareTripleChecker+Invalid, 5636 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 290 mSolverCounterUnsat, 378 mSDtfsCounter, 5346 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2640 GetRequests, 1845 SyntacticMatches, 48 SemanticMatches, 747 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37067 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=13, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 127 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 319.0s InterpolantComputationTime, 2296 NumberOfCodeBlocks, 2246 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 3375 ConstructedInterpolants, 0 QuantifiedInterpolants, 9281 SizeOfPredicates, 114 NumberOfNonLiveVariables, 2187 ConjunctsInSsa, 303 ConjunctsInUnsatCore, 35 InterpolantComputations, 4 PerfectInterpolantSequences, 21656/41085 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id. Requires: ((((((3 <= x) && (x <= 14)) || (x == 0)) || (x == 1)) || (x == 15)) || (x == 2)) Ensures: ((((((3 <= x) && (x <= 14)) || (x == 0)) || (x == 1)) || (x == 15)) || (x == 2)) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:40:34,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e456c51-2002-43e3-8c81-1fbfa83e395d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE