./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.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_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/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_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/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_66db25cf-7f0a-4639-98e2-2a209cc1706b/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 aa34b6970b46b2c3f1bda76d086482188f10831dd44cba913e5171769601c6f3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:25:16,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:25:17,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 11:25:17,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:25:17,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:25:17,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:25:17,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:25:17,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:25:17,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:25:17,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:25:17,085 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:25:17,086 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:25:17,087 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:25:17,088 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:25:17,092 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:25:17,092 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:25:17,093 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:25:17,093 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:25:17,093 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:25:17,094 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:25:17,094 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:25:17,099 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:25:17,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:25:17,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:25:17,100 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:25:17,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:25:17,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:25:17,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:25:17,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:25:17,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:25:17,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:25:17,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:25:17,106 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:25:17,106 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:25:17,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:25:17,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:25:17,107 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:25:17,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:25:17,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:25:17,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:25:17,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:25:17,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:25:17,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:25:17,110 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:25:17,111 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:25:17,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:25:17,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:25:17,112 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:25:17,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:25:17,112 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_66db25cf-7f0a-4639-98e2-2a209cc1706b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa34b6970b46b2c3f1bda76d086482188f10831dd44cba913e5171769601c6f3 [2024-11-02 11:25:17,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:25:17,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:25:17,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:25:17,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:25:17,536 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:25:17,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c Unable to find full path for "g++" [2024-11-02 11:25:19,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:25:20,246 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:25:20,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2024-11-02 11:25:20,264 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/data/dca92c7f0/ae112a074c104095826a0d4e5b8a6d96/FLAGa694111b2 [2024-11-02 11:25:20,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/data/dca92c7f0/ae112a074c104095826a0d4e5b8a6d96 [2024-11-02 11:25:20,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:25:20,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:25:20,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:25:20,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:25:20,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:25:20,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:25:20" (1/1) ... [2024-11-02 11:25:20,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc196ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:20, skipping insertion in model container [2024-11-02 11:25:20,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:25:20" (1/1) ... [2024-11-02 11:25:20,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:25:20,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:25:20,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:25:21,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:25:21,048 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:25:21,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21 WrapperNode [2024-11-02 11:25:21,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:25:21,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:25:21,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:25:21,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:25:21,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,127 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2024-11-02 11:25:21,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:25:21,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:25:21,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:25:21,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:25:21,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:25:21,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:25:21,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:25:21,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:25:21,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (1/1) ... [2024-11-02 11:25:21,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:25:21,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:21,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:25:21,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:25:21,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:25:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:25:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:25:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:25:21,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:25:21,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:25:21,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 11:25:21,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 11:25:21,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:25:21,392 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:25:22,839 INFO L? ?]: Removed 200 outVars from TransFormulas that were not future-live. [2024-11-02 11:25:22,840 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:25:22,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:25:22,932 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:25:22,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:25:22 BoogieIcfgContainer [2024-11-02 11:25:22,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:25:22,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:25:22,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:25:22,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:25:22,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:25:20" (1/3) ... [2024-11-02 11:25:22,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e5dc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:25:22, skipping insertion in model container [2024-11-02 11:25:22,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:25:21" (2/3) ... [2024-11-02 11:25:22,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e5dc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:25:22, skipping insertion in model container [2024-11-02 11:25:22,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:25:22" (3/3) ... [2024-11-02 11:25:22,959 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.c [2024-11-02 11:25:22,994 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:25:22,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2024-11-02 11:25:23,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:25:23,133 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;@5974d653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:25:23,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-11-02 11:25:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 80 states have (on average 1.925) internal successors, (154), 149 states have internal predecessors, (154), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-02 11:25:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 11:25:23,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:23,169 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:23,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:23,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -942284691, now seen corresponding path program 1 times [2024-11-02 11:25:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:23,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421055800] [2024-11-02 11:25:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235042823] [2024-11-02 11:25:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:23,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:23,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:25:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:23,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 11:25:23,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 11:25:23,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:23,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:23,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421055800] [2024-11-02 11:25:23,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235042823] [2024-11-02 11:25:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235042823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:23,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:23,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:25:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212533754] [2024-11-02 11:25:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:23,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 11:25:23,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 11:25:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:23,785 INFO L87 Difference]: Start difference. First operand has 161 states, 80 states have (on average 1.925) internal successors, (154), 149 states have internal predecessors, (154), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 11:25:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:24,296 INFO L93 Difference]: Finished difference Result 306 states and 329 transitions. [2024-11-02 11:25:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 11:25:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9 [2024-11-02 11:25:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:24,312 INFO L225 Difference]: With dead ends: 306 [2024-11-02 11:25:24,312 INFO L226 Difference]: Without dead ends: 155 [2024-11-02 11:25:24,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:24,323 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 327 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:24,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 164 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 11:25:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-02 11:25:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-02 11:25:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 79 states have (on average 1.860759493670886) internal successors, (147), 144 states have internal predecessors, (147), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 11:25:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2024-11-02 11:25:24,393 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 9 [2024-11-02 11:25:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:24,394 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2024-11-02 11:25:24,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 11:25:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2024-11-02 11:25:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 11:25:24,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:24,396 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:24,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:25:24,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-02 11:25:24,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:24,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash 853945690, now seen corresponding path program 1 times [2024-11-02 11:25:24,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:24,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963894826] [2024-11-02 11:25:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:24,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274494293] [2024-11-02 11:25:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:24,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:24,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:24,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:25:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:24,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 11:25:24,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 11:25:24,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:24,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963894826] [2024-11-02 11:25:24,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274494293] [2024-11-02 11:25:24,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274494293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:24,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:24,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:25:24,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119048325] [2024-11-02 11:25:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:24,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:25:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:25:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:25:24,821 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:25:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:25,361 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2024-11-02 11:25:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:25:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-02 11:25:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:25,364 INFO L225 Difference]: With dead ends: 155 [2024-11-02 11:25:25,364 INFO L226 Difference]: Without dead ends: 154 [2024-11-02 11:25:25,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:25:25,367 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 103 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:25,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 168 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:25:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-02 11:25:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-02 11:25:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 79 states have (on average 1.8481012658227849) internal successors, (146), 143 states have internal predecessors, (146), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 11:25:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2024-11-02 11:25:25,384 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 10 [2024-11-02 11:25:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:25,385 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2024-11-02 11:25:25,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 11:25:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2024-11-02 11:25:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 11:25:25,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:25,387 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:25,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:25,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:25,591 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:25,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash -91036862, now seen corresponding path program 1 times [2024-11-02 11:25:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731596241] [2024-11-02 11:25:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:25,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:25,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731596241] [2024-11-02 11:25:25,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731596241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:25,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:25,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:25:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588218629] [2024-11-02 11:25:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:25,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:25:25,799 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:25,864 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2024-11-02 11:25:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:25:25,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2024-11-02 11:25:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:25,866 INFO L225 Difference]: With dead ends: 187 [2024-11-02 11:25:25,866 INFO L226 Difference]: Without dead ends: 158 [2024-11-02 11:25:25,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 11:25:25,868 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 9 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:25,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 454 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:25:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-02 11:25:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-02 11:25:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 83 states have (on average 1.8072289156626506) internal successors, (150), 146 states have internal predecessors, (150), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 11:25:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2024-11-02 11:25:25,900 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 20 [2024-11-02 11:25:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:25,900 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2024-11-02 11:25:25,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2024-11-02 11:25:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 11:25:25,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:25,903 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:25,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:25:25,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:25,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -467344375, now seen corresponding path program 1 times [2024-11-02 11:25:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:25,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375027440] [2024-11-02 11:25:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:26,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375027440] [2024-11-02 11:25:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375027440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570867322] [2024-11-02 11:25:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:26,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:26,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:26,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 11:25:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:26,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:25:26,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:26,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570867322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:26,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:26,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 11:25:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786839475] [2024-11-02 11:25:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:26,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:25:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:26,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:25:26,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:26,317 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:26,748 INFO L93 Difference]: Finished difference Result 268 states and 301 transitions. [2024-11-02 11:25:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:25:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-11-02 11:25:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:26,750 INFO L225 Difference]: With dead ends: 268 [2024-11-02 11:25:26,751 INFO L226 Difference]: Without dead ends: 258 [2024-11-02 11:25:26,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:26,753 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 95 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:26,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 230 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 11:25:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-02 11:25:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2024-11-02 11:25:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 134 states have (on average 1.791044776119403) internal successors, (240), 197 states have internal predecessors, (240), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 11:25:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 266 transitions. [2024-11-02 11:25:26,782 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 266 transitions. Word has length 24 [2024-11-02 11:25:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:26,783 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 266 transitions. [2024-11-02 11:25:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 266 transitions. [2024-11-02 11:25:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 11:25:26,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:26,784 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:26,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 11:25:26,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:26,989 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:26,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1602775557, now seen corresponding path program 1 times [2024-11-02 11:25:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471271579] [2024-11-02 11:25:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:27,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471271579] [2024-11-02 11:25:27,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471271579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:27,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:27,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 11:25:27,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602045409] [2024-11-02 11:25:27,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:27,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 11:25:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 11:25:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:27,174 INFO L87 Difference]: Start difference. First operand 213 states and 266 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:27,345 INFO L93 Difference]: Finished difference Result 289 states and 305 transitions. [2024-11-02 11:25:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:25:27,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2024-11-02 11:25:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:27,350 INFO L225 Difference]: With dead ends: 289 [2024-11-02 11:25:27,351 INFO L226 Difference]: Without dead ends: 288 [2024-11-02 11:25:27,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 11:25:27,352 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 142 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:27,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 860 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:25:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-02 11:25:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 220. [2024-11-02 11:25:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.7841726618705036) internal successors, (248), 203 states have internal predecessors, (248), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:25:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 276 transitions. [2024-11-02 11:25:27,389 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 276 transitions. Word has length 25 [2024-11-02 11:25:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:27,390 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 276 transitions. [2024-11-02 11:25:27,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 276 transitions. [2024-11-02 11:25:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 11:25:27,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:27,392 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:27,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 11:25:27,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:27,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1853627915, now seen corresponding path program 1 times [2024-11-02 11:25:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757138550] [2024-11-02 11:25:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:27,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757138550] [2024-11-02 11:25:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757138550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:27,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123702665] [2024-11-02 11:25:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:27,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:27,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 11:25:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:27,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:27,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:27,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123702665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:27,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:27,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457390184] [2024-11-02 11:25:27,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:27,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:27,719 INFO L87 Difference]: Start difference. First operand 220 states and 276 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:28,463 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2024-11-02 11:25:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-02 11:25:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:28,469 INFO L225 Difference]: With dead ends: 250 [2024-11-02 11:25:28,469 INFO L226 Difference]: Without dead ends: 247 [2024-11-02 11:25:28,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:28,470 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 203 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:28,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 168 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 11:25:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-02 11:25:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 220. [2024-11-02 11:25:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 139 states have (on average 1.7625899280575539) internal successors, (245), 203 states have internal predecessors, (245), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:25:28,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 273 transitions. [2024-11-02 11:25:28,495 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 273 transitions. Word has length 26 [2024-11-02 11:25:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:28,495 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 273 transitions. [2024-11-02 11:25:28,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 273 transitions. [2024-11-02 11:25:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 11:25:28,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:28,498 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:28,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 11:25:28,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:28,699 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:28,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1853565358, now seen corresponding path program 1 times [2024-11-02 11:25:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962710908] [2024-11-02 11:25:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:28,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962710908] [2024-11-02 11:25:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962710908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 11:25:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507113740] [2024-11-02 11:25:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:28,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 11:25:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 11:25:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:28,816 INFO L87 Difference]: Start difference. First operand 220 states and 273 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:28,958 INFO L93 Difference]: Finished difference Result 386 states and 443 transitions. [2024-11-02 11:25:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 11:25:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-11-02 11:25:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:28,961 INFO L225 Difference]: With dead ends: 386 [2024-11-02 11:25:28,961 INFO L226 Difference]: Without dead ends: 241 [2024-11-02 11:25:28,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-02 11:25:28,968 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 38 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:28,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 618 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:25:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-02 11:25:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2024-11-02 11:25:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 208 states have internal predecessors, (250), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:25:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 278 transitions. [2024-11-02 11:25:29,000 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 278 transitions. Word has length 26 [2024-11-02 11:25:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:29,000 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 278 transitions. [2024-11-02 11:25:29,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 278 transitions. [2024-11-02 11:25:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 11:25:29,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:29,002 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:29,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 11:25:29,011 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:29,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1627890715, now seen corresponding path program 1 times [2024-11-02 11:25:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184886523] [2024-11-02 11:25:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:29,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:29,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184886523] [2024-11-02 11:25:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184886523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991878887] [2024-11-02 11:25:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:29,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:29,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:29,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:29,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 11:25:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:29,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 11:25:29,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:29,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991878887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:29,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:29,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136298867] [2024-11-02 11:25:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:29,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:29,307 INFO L87 Difference]: Start difference. First operand 226 states and 278 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:30,185 INFO L93 Difference]: Finished difference Result 240 states and 289 transitions. [2024-11-02 11:25:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:30,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-11-02 11:25:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:30,189 INFO L225 Difference]: With dead ends: 240 [2024-11-02 11:25:30,189 INFO L226 Difference]: Without dead ends: 239 [2024-11-02 11:25:30,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:30,190 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 63 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:30,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 207 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:25:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-02 11:25:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 226. [2024-11-02 11:25:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.7291666666666667) internal successors, (249), 208 states have internal predecessors, (249), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:25:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2024-11-02 11:25:30,211 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 27 [2024-11-02 11:25:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:30,212 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2024-11-02 11:25:30,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2024-11-02 11:25:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 11:25:30,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:30,215 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:30,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 11:25:30,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-02 11:25:30,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:30,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1074995187, now seen corresponding path program 1 times [2024-11-02 11:25:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:30,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320198171] [2024-11-02 11:25:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:30,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:30,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320198171] [2024-11-02 11:25:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320198171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694189927] [2024-11-02 11:25:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:30,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:30,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:30,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:30,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 11:25:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:30,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:30,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:30,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694189927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555724473] [2024-11-02 11:25:30,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:30,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:30,640 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:32,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:32,176 INFO L93 Difference]: Finished difference Result 284 states and 319 transitions. [2024-11-02 11:25:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-02 11:25:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:32,178 INFO L225 Difference]: With dead ends: 284 [2024-11-02 11:25:32,179 INFO L226 Difference]: Without dead ends: 282 [2024-11-02 11:25:32,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:32,181 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 156 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:32,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 244 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-02 11:25:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-02 11:25:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2024-11-02 11:25:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.7152777777777777) internal successors, (247), 208 states have internal predecessors, (247), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 11:25:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 275 transitions. [2024-11-02 11:25:32,200 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 275 transitions. Word has length 28 [2024-11-02 11:25:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:32,201 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 275 transitions. [2024-11-02 11:25:32,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 275 transitions. [2024-11-02 11:25:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 11:25:32,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:32,202 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:32,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:32,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:32,406 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:32,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1135116304, now seen corresponding path program 1 times [2024-11-02 11:25:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490111921] [2024-11-02 11:25:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224387025] [2024-11-02 11:25:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:32,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:32,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:32,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 11:25:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:32,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:25:32,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:32,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:32,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490111921] [2024-11-02 11:25:32,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:32,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224387025] [2024-11-02 11:25:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224387025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:32,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:25:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529844175] [2024-11-02 11:25:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:32,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:25:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:25:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:25:32,519 INFO L87 Difference]: Start difference. First operand 226 states and 275 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:32,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:32,796 INFO L93 Difference]: Finished difference Result 376 states and 473 transitions. [2024-11-02 11:25:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:25:32,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-11-02 11:25:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:32,803 INFO L225 Difference]: With dead ends: 376 [2024-11-02 11:25:32,803 INFO L226 Difference]: Without dead ends: 368 [2024-11-02 11:25:32,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 11:25:32,804 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 86 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:32,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 275 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 11:25:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-02 11:25:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 327. [2024-11-02 11:25:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 237 states have (on average 1.729957805907173) internal successors, (410), 301 states have internal predecessors, (410), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 454 transitions. [2024-11-02 11:25:32,831 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 454 transitions. Word has length 28 [2024-11-02 11:25:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:32,832 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 454 transitions. [2024-11-02 11:25:32,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:25:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 454 transitions. [2024-11-02 11:25:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 11:25:32,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:32,834 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:32,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 11:25:33,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-02 11:25:33,035 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:33,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:33,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1034887773, now seen corresponding path program 1 times [2024-11-02 11:25:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136035097] [2024-11-02 11:25:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:33,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136035097] [2024-11-02 11:25:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136035097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113611750] [2024-11-02 11:25:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:33,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:33,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 11:25:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:33,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:33,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:33,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:33,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113611750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:33,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:33,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:33,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778060637] [2024-11-02 11:25:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:33,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:33,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:33,391 INFO L87 Difference]: Start difference. First operand 327 states and 454 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:35,678 INFO L93 Difference]: Finished difference Result 374 states and 476 transitions. [2024-11-02 11:25:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-02 11:25:35,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:35,682 INFO L225 Difference]: With dead ends: 374 [2024-11-02 11:25:35,682 INFO L226 Difference]: Without dead ends: 370 [2024-11-02 11:25:35,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:35,683 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 104 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:35,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 284 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-02 11:25:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-02 11:25:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 327. [2024-11-02 11:25:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 237 states have (on average 1.7046413502109705) internal successors, (404), 301 states have internal predecessors, (404), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 448 transitions. [2024-11-02 11:25:35,706 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 448 transitions. Word has length 29 [2024-11-02 11:25:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:35,707 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 448 transitions. [2024-11-02 11:25:35,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 448 transitions. [2024-11-02 11:25:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 11:25:35,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:35,708 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:35,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:35,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-02 11:25:35,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash 74927666, now seen corresponding path program 1 times [2024-11-02 11:25:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033777899] [2024-11-02 11:25:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:36,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033777899] [2024-11-02 11:25:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033777899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116701932] [2024-11-02 11:25:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:36,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:36,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:36,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 11:25:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:36,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 11:25:36,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:36,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116701932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-02 11:25:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508434288] [2024-11-02 11:25:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:36,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:25:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:25:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-02 11:25:36,263 INFO L87 Difference]: Start difference. First operand 327 states and 448 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:37,805 INFO L93 Difference]: Finished difference Result 391 states and 460 transitions. [2024-11-02 11:25:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:25:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-02 11:25:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:37,808 INFO L225 Difference]: With dead ends: 391 [2024-11-02 11:25:37,808 INFO L226 Difference]: Without dead ends: 390 [2024-11-02 11:25:37,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-02 11:25:37,810 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 479 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:37,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 275 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-02 11:25:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-02 11:25:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 327. [2024-11-02 11:25:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 237 states have (on average 1.7004219409282701) internal successors, (403), 301 states have internal predecessors, (403), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 447 transitions. [2024-11-02 11:25:37,832 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 447 transitions. Word has length 30 [2024-11-02 11:25:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:37,832 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 447 transitions. [2024-11-02 11:25:37,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 447 transitions. [2024-11-02 11:25:37,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 11:25:37,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:37,833 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:37,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 11:25:38,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:38,038 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:38,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1972209564, now seen corresponding path program 1 times [2024-11-02 11:25:38,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:38,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132939554] [2024-11-02 11:25:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:38,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822379478] [2024-11-02 11:25:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:38,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:38,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:38,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 11:25:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:38,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 11:25:38,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:38,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:38,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132939554] [2024-11-02 11:25:38,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822379478] [2024-11-02 11:25:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822379478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:38,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:38,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:25:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788638431] [2024-11-02 11:25:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:38,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:25:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:25:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:25:38,200 INFO L87 Difference]: Start difference. First operand 327 states and 447 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:39,393 INFO L93 Difference]: Finished difference Result 391 states and 459 transitions. [2024-11-02 11:25:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:25:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-02 11:25:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:39,397 INFO L225 Difference]: With dead ends: 391 [2024-11-02 11:25:39,397 INFO L226 Difference]: Without dead ends: 390 [2024-11-02 11:25:39,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:25:39,398 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 476 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:39,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 276 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-02 11:25:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-02 11:25:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 327. [2024-11-02 11:25:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 237 states have (on average 1.6962025316455696) internal successors, (402), 301 states have internal predecessors, (402), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 446 transitions. [2024-11-02 11:25:39,421 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 446 transitions. Word has length 31 [2024-11-02 11:25:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:39,422 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 446 transitions. [2024-11-02 11:25:39,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 11:25:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 446 transitions. [2024-11-02 11:25:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 11:25:39,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:39,425 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:39,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:39,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:39,626 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:39,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1293578925, now seen corresponding path program 1 times [2024-11-02 11:25:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436631837] [2024-11-02 11:25:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:39,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:39,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:39,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436631837] [2024-11-02 11:25:39,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436631837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505428195] [2024-11-02 11:25:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:39,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:39,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:39,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:39,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 11:25:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:39,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:39,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:39,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:39,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505428195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:39,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:39,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:39,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124727161] [2024-11-02 11:25:39,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:39,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:39,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:39,929 INFO L87 Difference]: Start difference. First operand 327 states and 446 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:40,386 INFO L93 Difference]: Finished difference Result 356 states and 458 transitions. [2024-11-02 11:25:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-02 11:25:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:40,388 INFO L225 Difference]: With dead ends: 356 [2024-11-02 11:25:40,389 INFO L226 Difference]: Without dead ends: 354 [2024-11-02 11:25:40,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:40,390 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 259 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:40,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 11:25:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-02 11:25:40,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 328. [2024-11-02 11:25:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 238 states have (on average 1.684873949579832) internal successors, (401), 301 states have internal predecessors, (401), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 445 transitions. [2024-11-02 11:25:40,411 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 445 transitions. Word has length 33 [2024-11-02 11:25:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:40,411 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 445 transitions. [2024-11-02 11:25:40,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 445 transitions. [2024-11-02 11:25:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-02 11:25:40,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:40,412 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:40,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-02 11:25:40,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-02 11:25:40,616 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:40,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1446240804, now seen corresponding path program 1 times [2024-11-02 11:25:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:40,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997879589] [2024-11-02 11:25:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:40,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:40,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997879589] [2024-11-02 11:25:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997879589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825784521] [2024-11-02 11:25:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:40,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:40,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:40,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 11:25:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:40,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:40,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:40,873 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825784521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:40,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363365837] [2024-11-02 11:25:40,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:40,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:40,875 INFO L87 Difference]: Start difference. First operand 328 states and 445 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:41,363 INFO L93 Difference]: Finished difference Result 356 states and 455 transitions. [2024-11-02 11:25:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-11-02 11:25:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:41,367 INFO L225 Difference]: With dead ends: 356 [2024-11-02 11:25:41,367 INFO L226 Difference]: Without dead ends: 354 [2024-11-02 11:25:41,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:41,368 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 257 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:41,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:25:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-02 11:25:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 329. [2024-11-02 11:25:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 239 states have (on average 1.6736401673640167) internal successors, (400), 302 states have internal predecessors, (400), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 444 transitions. [2024-11-02 11:25:41,390 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 444 transitions. Word has length 34 [2024-11-02 11:25:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:41,392 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 444 transitions. [2024-11-02 11:25:41,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 444 transitions. [2024-11-02 11:25:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 11:25:41,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:41,394 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:41,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-02 11:25:41,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:41,594 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:41,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:41,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1883791755, now seen corresponding path program 1 times [2024-11-02 11:25:41,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:41,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773041681] [2024-11-02 11:25:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:41,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:41,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773041681] [2024-11-02 11:25:41,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773041681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:41,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273645317] [2024-11-02 11:25:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:41,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:41,704 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:41,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-02 11:25:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:41,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:25:41,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:41,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273645317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-02 11:25:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258317857] [2024-11-02 11:25:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:41,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:25:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:25:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:41,796 INFO L87 Difference]: Start difference. First operand 329 states and 444 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:41,973 INFO L93 Difference]: Finished difference Result 370 states and 462 transitions. [2024-11-02 11:25:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:25:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2024-11-02 11:25:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:41,976 INFO L225 Difference]: With dead ends: 370 [2024-11-02 11:25:41,976 INFO L226 Difference]: Without dead ends: 366 [2024-11-02 11:25:41,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:25:41,977 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 81 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:41,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 287 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:25:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-02 11:25:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 331. [2024-11-02 11:25:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 241 states have (on average 1.6514522821576763) internal successors, (398), 304 states have internal predecessors, (398), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 442 transitions. [2024-11-02 11:25:41,996 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 442 transitions. Word has length 35 [2024-11-02 11:25:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:41,997 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 442 transitions. [2024-11-02 11:25:41,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 442 transitions. [2024-11-02 11:25:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-02 11:25:41,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:41,998 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:42,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:42,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-02 11:25:42,199 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:42,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:42,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2142638185, now seen corresponding path program 1 times [2024-11-02 11:25:42,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:42,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655480115] [2024-11-02 11:25:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:42,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655480115] [2024-11-02 11:25:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655480115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056011488] [2024-11-02 11:25:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:42,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:42,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-02 11:25:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:42,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:42,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:42,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056011488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642103845] [2024-11-02 11:25:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:42,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:42,437 INFO L87 Difference]: Start difference. First operand 331 states and 442 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:43,356 INFO L93 Difference]: Finished difference Result 368 states and 456 transitions. [2024-11-02 11:25:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2024-11-02 11:25:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:43,359 INFO L225 Difference]: With dead ends: 368 [2024-11-02 11:25:43,359 INFO L226 Difference]: Without dead ends: 366 [2024-11-02 11:25:43,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:43,360 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 88 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:43,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 369 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-02 11:25:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-02 11:25:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 332. [2024-11-02 11:25:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 242 states have (on average 1.640495867768595) internal successors, (397), 305 states have internal predecessors, (397), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-02 11:25:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 441 transitions. [2024-11-02 11:25:43,380 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 441 transitions. Word has length 37 [2024-11-02 11:25:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:43,381 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 441 transitions. [2024-11-02 11:25:43,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 441 transitions. [2024-11-02 11:25:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 11:25:43,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:43,382 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:43,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:43,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-02 11:25:43,586 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:43,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1997274080, now seen corresponding path program 1 times [2024-11-02 11:25:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959057308] [2024-11-02 11:25:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 11:25:43,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959057308] [2024-11-02 11:25:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959057308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:25:43,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039974399] [2024-11-02 11:25:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:43,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:43,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:43,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-02 11:25:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:43,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:43,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 11:25:43,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:43,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039974399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:43,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:25:43,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 11:25:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627887170] [2024-11-02 11:25:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:43,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:43,924 INFO L87 Difference]: Start difference. First operand 332 states and 441 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:44,718 INFO L93 Difference]: Finished difference Result 368 states and 453 transitions. [2024-11-02 11:25:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-02 11:25:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:44,720 INFO L225 Difference]: With dead ends: 368 [2024-11-02 11:25:44,721 INFO L226 Difference]: Without dead ends: 351 [2024-11-02 11:25:44,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:25:44,722 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 140 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:44,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 302 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 11:25:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-02 11:25:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 318. [2024-11-02 11:25:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 230 states have (on average 1.6608695652173913) internal successors, (382), 293 states have internal predecessors, (382), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-02 11:25:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 424 transitions. [2024-11-02 11:25:44,743 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 424 transitions. Word has length 38 [2024-11-02 11:25:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:44,744 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 424 transitions. [2024-11-02 11:25:44,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:25:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 424 transitions. [2024-11-02 11:25:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 11:25:44,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:44,746 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:44,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-02 11:25:44,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-02 11:25:44,946 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:44,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 154235686, now seen corresponding path program 1 times [2024-11-02 11:25:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661905989] [2024-11-02 11:25:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017388538] [2024-11-02 11:25:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:44,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:44,967 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:44,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-02 11:25:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:45,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:25:45,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 11:25:45,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:45,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661905989] [2024-11-02 11:25:45,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017388538] [2024-11-02 11:25:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017388538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:45,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:45,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:25:45,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054942435] [2024-11-02 11:25:45,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:45,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:45,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:25:45,173 INFO L87 Difference]: Start difference. First operand 318 states and 424 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 11:25:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:45,628 INFO L93 Difference]: Finished difference Result 343 states and 445 transitions. [2024-11-02 11:25:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-11-02 11:25:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:45,631 INFO L225 Difference]: With dead ends: 343 [2024-11-02 11:25:45,631 INFO L226 Difference]: Without dead ends: 342 [2024-11-02 11:25:45,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 11:25:45,632 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 221 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:45,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 159 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 11:25:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-02 11:25:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 318. [2024-11-02 11:25:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 230 states have (on average 1.6565217391304348) internal successors, (381), 293 states have internal predecessors, (381), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-02 11:25:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 423 transitions. [2024-11-02 11:25:45,652 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 423 transitions. Word has length 47 [2024-11-02 11:25:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:45,653 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 423 transitions. [2024-11-02 11:25:45,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-02 11:25:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 423 transitions. [2024-11-02 11:25:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 11:25:45,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:45,654 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:45,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:45,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:45,855 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:45,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1901984210, now seen corresponding path program 1 times [2024-11-02 11:25:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446836707] [2024-11-02 11:25:45,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:45,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301262528] [2024-11-02 11:25:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:45,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:45,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-02 11:25:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:45,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 11:25:45,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 11:25:46,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:46,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446836707] [2024-11-02 11:25:46,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301262528] [2024-11-02 11:25:46,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301262528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:46,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:46,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:25:46,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923066695] [2024-11-02 11:25:46,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:46,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:46,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:25:46,243 INFO L87 Difference]: Start difference. First operand 318 states and 423 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 11:25:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:25:46,907 INFO L93 Difference]: Finished difference Result 345 states and 444 transitions. [2024-11-02 11:25:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:25:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2024-11-02 11:25:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:25:46,910 INFO L225 Difference]: With dead ends: 345 [2024-11-02 11:25:46,910 INFO L226 Difference]: Without dead ends: 344 [2024-11-02 11:25:46,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 11:25:46,911 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 46 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 11:25:46,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 328 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 11:25:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-02 11:25:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 318. [2024-11-02 11:25:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 230 states have (on average 1.6478260869565218) internal successors, (379), 293 states have internal predecessors, (379), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-02 11:25:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 421 transitions. [2024-11-02 11:25:46,936 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 421 transitions. Word has length 55 [2024-11-02 11:25:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:25:46,937 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 421 transitions. [2024-11-02 11:25:46,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 11:25:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 421 transitions. [2024-11-02 11:25:46,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 11:25:46,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:25:46,938 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:25:46,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-02 11:25:47,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:47,139 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2024-11-02 11:25:47,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:25:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1168031755, now seen corresponding path program 1 times [2024-11-02 11:25:47,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:25:47,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499355954] [2024-11-02 11:25:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:25:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 11:25:47,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448142088] [2024-11-02 11:25:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:25:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:25:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:25:47,161 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:25:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66db25cf-7f0a-4639-98e2-2a209cc1706b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-02 11:25:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:25:47,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 11:25:47,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:25:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 11:25:49,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:25:49,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:25:49,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499355954] [2024-11-02 11:25:49,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 11:25:49,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448142088] [2024-11-02 11:25:49,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448142088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:25:49,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:25:49,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:25:49,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193272975] [2024-11-02 11:25:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:25:49,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:25:49,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:25:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:25:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=5, Unknown=1, NotChecked=0, Total=12 [2024-11-02 11:25:49,323 INFO L87 Difference]: Start difference. First operand 318 states and 421 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 11:25:51,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]