./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2 --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 fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:38:45,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:38:45,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:38:45,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:38:45,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:38:45,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:38:45,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:38:45,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:38:45,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:38:45,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:38:45,254 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:38:45,255 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:38:45,255 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:38:45,255 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:38:45,258 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:38:45,258 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:38:45,258 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:38:45,259 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:38:45,259 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:38:45,260 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:38:45,260 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:38:45,264 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:38:45,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:38:45,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:38:45,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:38:45,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:38:45,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:38:45,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:38:45,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:38:45,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:38:45,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:38:45,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:38:45,268 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:38:45,270 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:38:45,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:38:45,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:38:45,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:38:45,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:38:45,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:38:45,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:38:45,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:45,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:38:45,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:38:45,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:38:45,274 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:38:45,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:38:45,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:38:45,275 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:38:45,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:38:45,275 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_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 [2024-11-02 12:38:45,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:38:45,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:38:45,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:38:45,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:38:45,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:38:45,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-multidimensional/rev-3-u.c Unable to find full path for "g++" [2024-11-02 12:38:47,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:47,886 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:47,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/sv-benchmarks/c/array-multidimensional/rev-3-u.c [2024-11-02 12:38:47,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/data/285467a06/05ebd9c416654a538fd9805d8b2ee877/FLAGd154b3854 [2024-11-02 12:38:48,260 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/data/285467a06/05ebd9c416654a538fd9805d8b2ee877 [2024-11-02 12:38:48,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:48,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:48,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:48,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:48,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:48,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246e31c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48, skipping insertion in model container [2024-11-02 12:38:48,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:48,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:48,539 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:48,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:48,597 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:48,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48 WrapperNode [2024-11-02 12:38:48,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:48,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:48,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:48,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:48,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,665 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 149 [2024-11-02 12:38:48,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:48,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:48,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:48,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:48,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:48,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:48,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:48,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:48,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (1/1) ... [2024-11-02 12:38:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:48,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:48,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:38:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:38:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:38:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:38:49,014 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:49,021 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:49,490 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2024-11-02 12:38:49,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:49,578 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:49,579 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-02 12:38:49,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:49 BoogieIcfgContainer [2024-11-02 12:38:49,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:49,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:49,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:49,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:49,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:48" (1/3) ... [2024-11-02 12:38:49,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af976b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:49, skipping insertion in model container [2024-11-02 12:38:49,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:48" (2/3) ... [2024-11-02 12:38:49,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af976b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:49, skipping insertion in model container [2024-11-02 12:38:49,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:49" (3/3) ... [2024-11-02 12:38:49,589 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-3-u.c [2024-11-02 12:38:49,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:49,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-02 12:38:49,713 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:49,721 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;@9dc7169, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:49,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-02 12:38:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 94 states have internal predecessors, (103), 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) [2024-11-02 12:38:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:38:49,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:49,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:38:49,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:49,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash 7405975, now seen corresponding path program 1 times [2024-11-02 12:38:49,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:49,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760417527] [2024-11-02 12:38:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:49,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:50,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760417527] [2024-11-02 12:38:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760417527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:50,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:50,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:50,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465420872] [2024-11-02 12:38:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:50,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:50,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:50,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:50,119 INFO L87 Difference]: Start difference. First operand has 95 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 94 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:50,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:50,474 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2024-11-02 12:38:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:50,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:38:50,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:50,486 INFO L225 Difference]: With dead ends: 237 [2024-11-02 12:38:50,486 INFO L226 Difference]: Without dead ends: 142 [2024-11-02 12:38:50,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:50,493 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:50,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 54 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-02 12:38:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2024-11-02 12:38:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 94 states have (on average 1.8404255319148937) internal successors, (173), 135 states have internal predecessors, (173), 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) [2024-11-02 12:38:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 173 transitions. [2024-11-02 12:38:50,539 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 173 transitions. Word has length 4 [2024-11-02 12:38:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:50,540 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 173 transitions. [2024-11-02 12:38:50,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 173 transitions. [2024-11-02 12:38:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:38:50,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:50,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:38:50,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:50,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:50,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 229381058, now seen corresponding path program 1 times [2024-11-02 12:38:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:50,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466273079] [2024-11-02 12:38:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:50,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:50,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:50,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466273079] [2024-11-02 12:38:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466273079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:50,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27116581] [2024-11-02 12:38:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:50,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:50,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:50,642 INFO L87 Difference]: Start difference. First operand 136 states and 173 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:50,785 INFO L93 Difference]: Finished difference Result 224 states and 301 transitions. [2024-11-02 12:38:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-02 12:38:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:50,790 INFO L225 Difference]: With dead ends: 224 [2024-11-02 12:38:50,790 INFO L226 Difference]: Without dead ends: 218 [2024-11-02 12:38:50,793 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 [2024-11-02 12:38:50,795 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:50,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 127 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:50,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-02 12:38:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2024-11-02 12:38:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 160 states have (on average 1.80625) internal successors, (289), 201 states have internal predecessors, (289), 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) [2024-11-02 12:38:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2024-11-02 12:38:50,829 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 5 [2024-11-02 12:38:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:50,829 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2024-11-02 12:38:50,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2024-11-02 12:38:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:38:50,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:50,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:38:50,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:38:50,832 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:50,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:50,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1280256653, now seen corresponding path program 1 times [2024-11-02 12:38:50,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147002422] [2024-11-02 12:38:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:50,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:50,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147002422] [2024-11-02 12:38:50,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147002422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:50,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:50,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:50,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892984583] [2024-11-02 12:38:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:50,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:50,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:50,949 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:51,125 INFO L93 Difference]: Finished difference Result 403 states and 577 transitions. [2024-11-02 12:38:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-02 12:38:51,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:51,128 INFO L225 Difference]: With dead ends: 403 [2024-11-02 12:38:51,128 INFO L226 Difference]: Without dead ends: 227 [2024-11-02 12:38:51,133 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 [2024-11-02 12:38:51,134 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:51,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-02 12:38:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-11-02 12:38:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 181 states have (on average 1.7734806629834254) internal successors, (321), 222 states have internal predecessors, (321), 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) [2024-11-02 12:38:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 321 transitions. [2024-11-02 12:38:51,156 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 321 transitions. Word has length 6 [2024-11-02 12:38:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:51,156 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 321 transitions. [2024-11-02 12:38:51,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 321 transitions. [2024-11-02 12:38:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:38:51,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:51,158 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:51,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:38:51,158 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:51,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 198193375, now seen corresponding path program 1 times [2024-11-02 12:38:51,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510862379] [2024-11-02 12:38:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:51,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510862379] [2024-11-02 12:38:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510862379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031106328] [2024-11-02 12:38:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:51,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:51,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:51,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:38:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:51,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:38:51,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:51,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031106328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:51,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:38:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-02 12:38:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783144179] [2024-11-02 12:38:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:51,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:51,455 INFO L87 Difference]: Start difference. First operand 223 states and 321 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:51,639 INFO L93 Difference]: Finished difference Result 239 states and 321 transitions. [2024-11-02 12:38:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:38:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:51,641 INFO L225 Difference]: With dead ends: 239 [2024-11-02 12:38:51,642 INFO L226 Difference]: Without dead ends: 236 [2024-11-02 12:38:51,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:51,644 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 89 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:51,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 180 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-02 12:38:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2024-11-02 12:38:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 181 states have (on average 1.729281767955801) internal successors, (313), 219 states have internal predecessors, (313), 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) [2024-11-02 12:38:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 313 transitions. [2024-11-02 12:38:51,660 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 313 transitions. Word has length 8 [2024-11-02 12:38:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:51,660 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 313 transitions. [2024-11-02 12:38:51,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 313 transitions. [2024-11-02 12:38:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:38:51,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:51,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:38:51,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:38:51,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:51,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:51,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -979777140, now seen corresponding path program 1 times [2024-11-02 12:38:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673051244] [2024-11-02 12:38:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:38:51,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673051244] [2024-11-02 12:38:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673051244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:51,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:51,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844537033] [2024-11-02 12:38:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:51,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:51,965 INFO L87 Difference]: Start difference. First operand 220 states and 313 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:52,177 INFO L93 Difference]: Finished difference Result 431 states and 614 transitions. [2024-11-02 12:38:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:38:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:52,179 INFO L225 Difference]: With dead ends: 431 [2024-11-02 12:38:52,179 INFO L226 Difference]: Without dead ends: 220 [2024-11-02 12:38:52,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:52,181 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 135 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:52,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 51 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:38:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-02 12:38:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-02 12:38:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 181 states have (on average 1.6408839779005524) internal successors, (297), 219 states have internal predecessors, (297), 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) [2024-11-02 12:38:52,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 297 transitions. [2024-11-02 12:38:52,196 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 297 transitions. Word has length 9 [2024-11-02 12:38:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:52,196 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 297 transitions. [2024-11-02 12:38:52,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 297 transitions. [2024-11-02 12:38:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:38:52,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:52,197 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:38:52,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:38:52,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:52,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1849027392, now seen corresponding path program 1 times [2024-11-02 12:38:52,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:52,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097933823] [2024-11-02 12:38:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:52,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:52,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097933823] [2024-11-02 12:38:52,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097933823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:52,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226397328] [2024-11-02 12:38:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:52,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:52,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:52,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:52,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:38:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:52,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:38:52,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:52,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226397328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650653765] [2024-11-02 12:38:52,396 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-02 12:38:52,396 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:52,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:52,406 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:52,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:53,298 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1650653765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 10 [2024-11-02 12:38:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229458441] [2024-11-02 12:38:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:53,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:38:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:38:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:38:53,934 INFO L87 Difference]: Start difference. First operand 220 states and 297 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:55,198 INFO L93 Difference]: Finished difference Result 224 states and 297 transitions. [2024-11-02 12:38:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:38:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:38:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:55,200 INFO L225 Difference]: With dead ends: 224 [2024-11-02 12:38:55,200 INFO L226 Difference]: Without dead ends: 223 [2024-11-02 12:38:55,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:38:55,202 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:55,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 12:38:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-02 12:38:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 218. [2024-11-02 12:38:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 179 states have (on average 1.6424581005586592) internal successors, (294), 217 states have internal predecessors, (294), 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) [2024-11-02 12:38:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 294 transitions. [2024-11-02 12:38:55,217 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 294 transitions. Word has length 9 [2024-11-02 12:38:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:55,218 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 294 transitions. [2024-11-02 12:38:55,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 294 transitions. [2024-11-02 12:38:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:38:55,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:55,219 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:38:55,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:38:55,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:55,420 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:55,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash -800719724, now seen corresponding path program 1 times [2024-11-02 12:38:55,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:55,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002822923] [2024-11-02 12:38:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:55,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002822923] [2024-11-02 12:38:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002822923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:55,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769628876] [2024-11-02 12:38:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:55,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:55,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:55,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:38:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:55,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:38:55,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:55,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769628876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1837317841] [2024-11-02 12:38:55,734 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:38:55,734 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:55,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:55,735 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:55,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:57,383 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:57,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1837317841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:57,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 4, 4] total 15 [2024-11-02 12:38:57,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680814149] [2024-11-02 12:38:57,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:57,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:38:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:38:57,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:38:57,809 INFO L87 Difference]: Start difference. First operand 218 states and 294 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-02 12:38:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:59,019 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2024-11-02 12:38:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:38:59,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-02 12:38:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:59,023 INFO L225 Difference]: With dead ends: 220 [2024-11-02 12:38:59,023 INFO L226 Difference]: Without dead ends: 216 [2024-11-02 12:38:59,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:38:59,024 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:59,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 22 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:38:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-02 12:38:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2024-11-02 12:38:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 177 states have (on average 1.6214689265536724) internal successors, (287), 212 states have internal predecessors, (287), 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) [2024-11-02 12:38:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 287 transitions. [2024-11-02 12:38:59,053 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 287 transitions. Word has length 15 [2024-11-02 12:38:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:59,053 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 287 transitions. [2024-11-02 12:38:59,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-11-02 12:38:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 287 transitions. [2024-11-02 12:38:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:38:59,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:59,056 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-02 12:38:59,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:38:59,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:59,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:38:59,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash 947492402, now seen corresponding path program 1 times [2024-11-02 12:38:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965865690] [2024-11-02 12:38:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:59,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965865690] [2024-11-02 12:38:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965865690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321101400] [2024-11-02 12:38:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:59,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:59,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:59,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:59,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:38:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:59,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:38:59,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:38:59,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-02 12:38:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321101400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110324154] [2024-11-02 12:38:59,512 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:38:59,512 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:59,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:59,513 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:59,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:00,364 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:00,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4117#true' at error location [2024-11-02 12:39:00,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:39:00,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2024-11-02 12:39:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977732342] [2024-11-02 12:39:00,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:39:00,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:39:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:39:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:39:00,670 INFO L87 Difference]: Start difference. First operand 213 states and 287 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:39:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:01,697 INFO L93 Difference]: Finished difference Result 761 states and 1131 transitions. [2024-11-02 12:39:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-02 12:39:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-02 12:39:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:01,701 INFO L225 Difference]: With dead ends: 761 [2024-11-02 12:39:01,701 INFO L226 Difference]: Without dead ends: 555 [2024-11-02 12:39:01,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2024-11-02 12:39:01,706 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1818 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:01,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 69 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:39:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-02 12:39:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 525. [2024-11-02 12:39:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 493 states have (on average 1.515212981744422) internal successors, (747), 524 states have internal predecessors, (747), 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) [2024-11-02 12:39:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 747 transitions. [2024-11-02 12:39:01,771 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 747 transitions. Word has length 16 [2024-11-02 12:39:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:01,771 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 747 transitions. [2024-11-02 12:39:01,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:39:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 747 transitions. [2024-11-02 12:39:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:39:01,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:01,773 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:01,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:01,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:01,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:01,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1804805924, now seen corresponding path program 1 times [2024-11-02 12:39:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058832081] [2024-11-02 12:39:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-02 12:39:02,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058832081] [2024-11-02 12:39:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058832081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054453971] [2024-11-02 12:39:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:02,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:02,135 INFO L87 Difference]: Start difference. First operand 525 states and 747 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-02 12:39:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:02,397 INFO L93 Difference]: Finished difference Result 1133 states and 1684 transitions. [2024-11-02 12:39:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:02,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-02 12:39:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:02,403 INFO L225 Difference]: With dead ends: 1133 [2024-11-02 12:39:02,403 INFO L226 Difference]: Without dead ends: 920 [2024-11-02 12:39:02,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:02,406 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 116 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:02,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 42 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-02 12:39:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 915. [2024-11-02 12:39:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 883 states have (on average 1.493771234428086) internal successors, (1319), 914 states have internal predecessors, (1319), 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) [2024-11-02 12:39:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1319 transitions. [2024-11-02 12:39:02,459 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1319 transitions. Word has length 42 [2024-11-02 12:39:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:02,459 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1319 transitions. [2024-11-02 12:39:02,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-02 12:39:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1319 transitions. [2024-11-02 12:39:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-02 12:39:02,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:02,463 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:02,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:39:02,464 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:02,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -114408684, now seen corresponding path program 1 times [2024-11-02 12:39:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115191001] [2024-11-02 12:39:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-02 12:39:02,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115191001] [2024-11-02 12:39:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115191001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:02,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505863611] [2024-11-02 12:39:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:02,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:02,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:02,582 INFO L87 Difference]: Start difference. First operand 915 states and 1319 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-02 12:39:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:02,826 INFO L93 Difference]: Finished difference Result 924 states and 1319 transitions. [2024-11-02 12:39:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-02 12:39:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:02,833 INFO L225 Difference]: With dead ends: 924 [2024-11-02 12:39:02,833 INFO L226 Difference]: Without dead ends: 920 [2024-11-02 12:39:02,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:02,836 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 161 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:02,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 42 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-02 12:39:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 915. [2024-11-02 12:39:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 883 states have (on average 1.4394110985277464) internal successors, (1271), 914 states have internal predecessors, (1271), 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) [2024-11-02 12:39:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1271 transitions. [2024-11-02 12:39:02,890 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1271 transitions. Word has length 43 [2024-11-02 12:39:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:02,892 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1271 transitions. [2024-11-02 12:39:02,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-02 12:39:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1271 transitions. [2024-11-02 12:39:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 12:39:02,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:02,897 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:02,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:39:02,897 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:02,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1671703960, now seen corresponding path program 1 times [2024-11-02 12:39:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213897342] [2024-11-02 12:39:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-02 12:39:03,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213897342] [2024-11-02 12:39:03,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213897342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:03,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:03,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319055511] [2024-11-02 12:39:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:03,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:03,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:03,025 INFO L87 Difference]: Start difference. First operand 915 states and 1271 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-02 12:39:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:03,279 INFO L93 Difference]: Finished difference Result 922 states and 1271 transitions. [2024-11-02 12:39:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-02 12:39:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:03,283 INFO L225 Difference]: With dead ends: 922 [2024-11-02 12:39:03,284 INFO L226 Difference]: Without dead ends: 918 [2024-11-02 12:39:03,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:03,285 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 97 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:03,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 45 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-02 12:39:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 915. [2024-11-02 12:39:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 883 states have (on average 1.40317100792752) internal successors, (1239), 914 states have internal predecessors, (1239), 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) [2024-11-02 12:39:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1239 transitions. [2024-11-02 12:39:03,333 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1239 transitions. Word has length 47 [2024-11-02 12:39:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:03,333 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1239 transitions. [2024-11-02 12:39:03,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-02 12:39:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1239 transitions. [2024-11-02 12:39:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-02 12:39:03,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:03,335 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-02 12:39:03,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:39:03,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:03,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 494420614, now seen corresponding path program 1 times [2024-11-02 12:39:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:03,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704541793] [2024-11-02 12:39:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-02 12:39:03,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:03,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704541793] [2024-11-02 12:39:03,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704541793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:03,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793759091] [2024-11-02 12:39:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:03,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:03,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:03,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:39:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:03,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:39:03,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 100 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-02 12:39:03,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 100 proven. 22 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-02 12:39:03,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793759091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:03,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67962501] [2024-11-02 12:39:03,766 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-02 12:39:03,766 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:03,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:03,767 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:03,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:04,753 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:05,449 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12444#(and (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (exists ((|v_#memory_int_78| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~k~0#1_186| Int)) (and (= |#memory_int| (store |v_#memory_int_78| |ULTIMATE.start_main_~#B~0#1.base| (store (select |v_#memory_int_78| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* 4 |v_ULTIMATE.start_main_~k~0#1_186|) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)) (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* 4 |v_ULTIMATE.start_main_~k~0#1_186|) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)))))) (<= 2147483647 |v_ULTIMATE.start_main_~k~0#1_186|) (<= (+ |v_ULTIMATE.start_main_~k~0#1_186| 1) |ULTIMATE.start_main_~n~0#1|) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* 4 |v_ULTIMATE.start_main_~k~0#1_186|) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|))) 2147483648)) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* 4 |v_ULTIMATE.start_main_~k~0#1_186|) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|))) 2147483647))))' at error location [2024-11-02 12:39:05,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:39:05,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 7, 7] total 15 [2024-11-02 12:39:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004341444] [2024-11-02 12:39:05,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:39:05,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 12:39:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 12:39:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-02 12:39:05,452 INFO L87 Difference]: Start difference. First operand 915 states and 1239 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 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) [2024-11-02 12:39:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:06,475 INFO L93 Difference]: Finished difference Result 2999 states and 4279 transitions. [2024-11-02 12:39:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:39:06,476 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-02 12:39:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:06,484 INFO L225 Difference]: With dead ends: 2999 [2024-11-02 12:39:06,484 INFO L226 Difference]: Without dead ends: 2100 [2024-11-02 12:39:06,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 110 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2024-11-02 12:39:06,487 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1659 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:06,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 84 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:39:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-11-02 12:39:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2024-11-02 12:39:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2071 states have (on average 1.3660067600193144) internal successors, (2829), 2099 states have internal predecessors, (2829), 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) [2024-11-02 12:39:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2829 transitions. [2024-11-02 12:39:06,592 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2829 transitions. Word has length 48 [2024-11-02 12:39:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:06,593 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 2829 transitions. [2024-11-02 12:39:06,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 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) [2024-11-02 12:39:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2829 transitions. [2024-11-02 12:39:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-02 12:39:06,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:06,594 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:06,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:39:06,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-02 12:39:06,797 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:06,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:06,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1580476836, now seen corresponding path program 1 times [2024-11-02 12:39:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:06,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139087795] [2024-11-02 12:39:06,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-11-02 12:39:07,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:07,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139087795] [2024-11-02 12:39:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139087795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:07,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:07,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:07,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028123439] [2024-11-02 12:39:07,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:07,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:07,062 INFO L87 Difference]: Start difference. First operand 2100 states and 2829 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-02 12:39:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:07,321 INFO L93 Difference]: Finished difference Result 2104 states and 2829 transitions. [2024-11-02 12:39:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:07,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-02 12:39:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:07,329 INFO L225 Difference]: With dead ends: 2104 [2024-11-02 12:39:07,329 INFO L226 Difference]: Without dead ends: 2100 [2024-11-02 12:39:07,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:07,330 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 75 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:07,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 42 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-11-02 12:39:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2024-11-02 12:39:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2071 states have (on average 1.3544181554804442) internal successors, (2805), 2099 states have internal predecessors, (2805), 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) [2024-11-02 12:39:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2805 transitions. [2024-11-02 12:39:07,431 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2805 transitions. Word has length 87 [2024-11-02 12:39:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:07,431 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 2805 transitions. [2024-11-02 12:39:07,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-11-02 12:39:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2805 transitions. [2024-11-02 12:39:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-02 12:39:07,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:07,433 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:07,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:39:07,433 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-02 12:39:07,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash -432410282, now seen corresponding path program 1 times [2024-11-02 12:39:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505046399] [2024-11-02 12:39:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 324 proven. 145 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-02 12:39:07,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505046399] [2024-11-02 12:39:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505046399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608365811] [2024-11-02 12:39:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:07,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:07,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:07,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:07,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931c51e3-15a5-4efb-a51a-b9d6e29c8eb8/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:39:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:08,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 12:39:08,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 324 proven. 145 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-02 12:39:08,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 324 proven. 145 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-02 12:39:08,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608365811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1515672432] [2024-11-02 12:39:08,844 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-02 12:39:08,845 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:08,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:08,845 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:08,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:13,320 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:15,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1515672432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 13, 13] total 49 [2024-11-02 12:39:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55685493] [2024-11-02 12:39:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:15,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-02 12:39:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-02 12:39:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=1806, Unknown=2, NotChecked=0, Total=2450 [2024-11-02 12:39:15,631 INFO L87 Difference]: Start difference. First operand 2100 states and 2805 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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)