./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/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_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/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_943a3e4b-989c-44b4-893b-938b5180b480/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 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:09,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:09,986 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:30:09,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:09,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:10,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:10,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:10,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:10,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:10,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:10,053 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:10,053 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:10,054 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:10,057 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:10,057 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:10,058 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:10,058 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:10,059 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:10,059 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:10,059 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:10,059 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:10,060 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:10,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:10,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:10,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:10,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:10,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:10,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:10,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:10,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:10,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:10,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:10,067 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:30:10,068 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:30:10,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:10,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:10,072 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:10,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:10,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:10,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:10,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:10,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:10,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:10,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:10,076 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:10,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:10,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:10,091 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:10,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:10,092 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_943a3e4b-989c-44b4-893b-938b5180b480/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 [2024-11-02 12:30:10,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:10,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:10,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:10,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:10,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:10,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c Unable to find full path for "g++" [2024-11-02 12:30:12,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:13,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:13,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c [2024-11-02 12:30:13,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/data/6d2f1712f/e03b4500114d40e0a55acc1b756cfc42/FLAGa4c689b29 [2024-11-02 12:30:13,392 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/data/6d2f1712f/e03b4500114d40e0a55acc1b756cfc42 [2024-11-02 12:30:13,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:13,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:13,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:13,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:13,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:13,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7f7ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13, skipping insertion in model container [2024-11-02 12:30:13,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:13,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:13,745 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:13,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:13,820 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:13,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13 WrapperNode [2024-11-02 12:30:13,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:13,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:13,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:13,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:13,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,940 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 139 [2024-11-02 12:30:13,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:13,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:13,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:13,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:13,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:13,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:14,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:14,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:14,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:14,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:14,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:14,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:14,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (1/1) ... [2024-11-02 12:30:14,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:14,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:14,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:14,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:14,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:30:14,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:30:14,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:30:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:30:14,201 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:14,204 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:15,143 INFO L? ?]: Removed 132 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:15,143 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:15,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:15,198 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 12:30:15,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:15 BoogieIcfgContainer [2024-11-02 12:30:15,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:15,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:15,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:15,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:15,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:13" (1/3) ... [2024-11-02 12:30:15,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fff22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:15, skipping insertion in model container [2024-11-02 12:30:15,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:13" (2/3) ... [2024-11-02 12:30:15,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fff22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:15, skipping insertion in model container [2024-11-02 12:30:15,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:15" (3/3) ... [2024-11-02 12:30:15,208 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound20.c [2024-11-02 12:30:15,226 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:15,227 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-02 12:30:15,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:15,293 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;@1f776d49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:15,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-02 12:30:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 113 states have internal predecessors, (119), 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 12:30:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:30:15,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:15,306 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:15,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:15,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1353732251, now seen corresponding path program 1 times [2024-11-02 12:30:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:15,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439863665] [2024-11-02 12:30:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:15,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:15,559 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 12:30:15,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439863665] [2024-11-02 12:30:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439863665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568726504] [2024-11-02 12:30:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:15,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:30:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:30:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:30:15,597 INFO L87 Difference]: Start difference. First operand has 125 states, 63 states have (on average 1.8888888888888888) internal successors, (119), 113 states have internal predecessors, (119), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 12:30:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:15,661 INFO L93 Difference]: Finished difference Result 241 states and 262 transitions. [2024-11-02 12:30:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:30:15,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 17 [2024-11-02 12:30:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:15,677 INFO L225 Difference]: With dead ends: 241 [2024-11-02 12:30:15,678 INFO L226 Difference]: Without dead ends: 122 [2024-11-02 12:30:15,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:30:15,690 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:15,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:30:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-02 12:30:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-02 12:30:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 111 states have internal predecessors, (114), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:30:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2024-11-02 12:30:15,751 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 17 [2024-11-02 12:30:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:15,753 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2024-11-02 12:30:15,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 12:30:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2024-11-02 12:30:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:30:15,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:15,756 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:15,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:15,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:15,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash -984172713, now seen corresponding path program 1 times [2024-11-02 12:30:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555791750] [2024-11-02 12:30:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:30:16,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555791750] [2024-11-02 12:30:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555791750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:16,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:16,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:30:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892516804] [2024-11-02 12:30:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:16,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:16,026 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:30:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:16,640 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2024-11-02 12:30:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:16,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 18 [2024-11-02 12:30:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:16,645 INFO L225 Difference]: With dead ends: 211 [2024-11-02 12:30:16,646 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:30:16,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:16,651 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 208 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:16,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 228 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:30:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 124. [2024-11-02 12:30:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 64 states have (on average 1.8125) internal successors, (116), 113 states have internal predecessors, (116), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:30:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2024-11-02 12:30:16,715 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 18 [2024-11-02 12:30:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:16,716 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2024-11-02 12:30:16,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:30:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2024-11-02 12:30:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:30:16,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:16,717 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:16,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:30:16,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:16,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2043804872, now seen corresponding path program 1 times [2024-11-02 12:30:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:16,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887761345] [2024-11-02 12:30:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705171360] [2024-11-02 12:30:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:16,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:16,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:16,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:30:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:16,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:30:16,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:16,892 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 12:30:16,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:16,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:16,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887761345] [2024-11-02 12:30:16,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705171360] [2024-11-02 12:30:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705171360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:16,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:16,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:16,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317689842] [2024-11-02 12:30:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:16,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:16,900 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:30:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:17,348 INFO L93 Difference]: Finished difference Result 193 states and 211 transitions. [2024-11-02 12:30:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 21 [2024-11-02 12:30:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:17,351 INFO L225 Difference]: With dead ends: 193 [2024-11-02 12:30:17,352 INFO L226 Difference]: Without dead ends: 189 [2024-11-02 12:30:17,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:17,357 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:17,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 208 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-02 12:30:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 163. [2024-11-02 12:30:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 99 states have (on average 1.8080808080808082) internal successors, (179), 148 states have internal predecessors, (179), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 203 transitions. [2024-11-02 12:30:17,385 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 203 transitions. Word has length 21 [2024-11-02 12:30:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:17,386 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 203 transitions. [2024-11-02 12:30:17,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:30:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 203 transitions. [2024-11-02 12:30:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:30:17,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:17,393 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:17,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:30:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:17,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2043805254, now seen corresponding path program 1 times [2024-11-02 12:30:17,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431377617] [2024-11-02 12:30:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:17,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:17,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091061475] [2024-11-02 12:30:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:17,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:17,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:17,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:17,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:30:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:17,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:30:17,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:17,795 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 12:30:17,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:17,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431377617] [2024-11-02 12:30:17,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:17,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091061475] [2024-11-02 12:30:17,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091061475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:17,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:17,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023901711] [2024-11-02 12:30:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:17,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:17,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:17,800 INFO L87 Difference]: Start difference. First operand 163 states and 203 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:30:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:18,122 INFO L93 Difference]: Finished difference Result 191 states and 207 transitions. [2024-11-02 12:30:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 21 [2024-11-02 12:30:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:18,126 INFO L225 Difference]: With dead ends: 191 [2024-11-02 12:30:18,126 INFO L226 Difference]: Without dead ends: 189 [2024-11-02 12:30:18,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:18,131 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 59 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:18,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 226 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-02 12:30:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 163. [2024-11-02 12:30:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 99 states have (on average 1.7878787878787878) internal successors, (177), 148 states have internal predecessors, (177), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2024-11-02 12:30:18,152 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 21 [2024-11-02 12:30:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:18,153 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2024-11-02 12:30:18,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12:30:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2024-11-02 12:30:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:30:18,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:18,154 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] [2024-11-02 12:30:18,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:30:18,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:18,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:18,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:18,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1296422886, now seen corresponding path program 1 times [2024-11-02 12:30:18,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:18,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457980315] [2024-11-02 12:30:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:18,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:18,597 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 12:30:18,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457980315] [2024-11-02 12:30:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457980315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:18,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041097154] [2024-11-02 12:30:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:18,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:18,601 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12:30:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:19,419 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2024-11-02 12:30:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 23 [2024-11-02 12:30:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:19,421 INFO L225 Difference]: With dead ends: 186 [2024-11-02 12:30:19,421 INFO L226 Difference]: Without dead ends: 185 [2024-11-02 12:30:19,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:19,422 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 53 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:19,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 389 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:30:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-02 12:30:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 164. [2024-11-02 12:30:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.78) internal successors, (178), 149 states have internal predecessors, (178), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2024-11-02 12:30:19,440 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 23 [2024-11-02 12:30:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:19,441 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2024-11-02 12:30:19,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12:30:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2024-11-02 12:30:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:30:19,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:19,443 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] [2024-11-02 12:30:19,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:30:19,443 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:19,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1296792292, now seen corresponding path program 1 times [2024-11-02 12:30:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97180017] [2024-11-02 12:30:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:19,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769869710] [2024-11-02 12:30:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:19,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:30:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:19,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:30:19,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:19,693 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 12:30:19,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:19,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97180017] [2024-11-02 12:30:19,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769869710] [2024-11-02 12:30:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769869710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:19,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:19,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83591494] [2024-11-02 12:30:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:19,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:19,697 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12:30:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:20,230 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2024-11-02 12:30:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2024-11-02 12:30:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:20,232 INFO L225 Difference]: With dead ends: 183 [2024-11-02 12:30:20,233 INFO L226 Difference]: Without dead ends: 182 [2024-11-02 12:30:20,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:20,235 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 139 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:20,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 180 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-02 12:30:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 164. [2024-11-02 12:30:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.77) internal successors, (177), 149 states have internal predecessors, (177), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2024-11-02 12:30:20,269 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 201 transitions. Word has length 23 [2024-11-02 12:30:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:20,269 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 201 transitions. [2024-11-02 12:30:20,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12:30:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 201 transitions. [2024-11-02 12:30:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:30:20,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:20,274 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 12:30:20,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:30:20,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 12:30:20,476 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:20,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1534403647, now seen corresponding path program 1 times [2024-11-02 12:30:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735482290] [2024-11-02 12:30:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189963804] [2024-11-02 12:30:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:20,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:20,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:20,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:20,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:30:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:20,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:30:20,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:20,683 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 12:30:20,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:20,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735482290] [2024-11-02 12:30:20,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:20,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189963804] [2024-11-02 12:30:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189963804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:20,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660660973] [2024-11-02 12:30:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:20,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:20,686 INFO L87 Difference]: Start difference. First operand 164 states and 201 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:30:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:21,220 INFO L93 Difference]: Finished difference Result 184 states and 203 transitions. [2024-11-02 12:30:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 24 [2024-11-02 12:30:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:21,223 INFO L225 Difference]: With dead ends: 184 [2024-11-02 12:30:21,223 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:30:21,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:21,224 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 53 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:21,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:30:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2024-11-02 12:30:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 101 states have (on average 1.7623762376237624) internal successors, (178), 150 states have internal predecessors, (178), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2024-11-02 12:30:21,239 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 24 [2024-11-02 12:30:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:21,239 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2024-11-02 12:30:21,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:30:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2024-11-02 12:30:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:30:21,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:21,241 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 12:30:21,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:30:21,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:21,442 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:21,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1545855305, now seen corresponding path program 1 times [2024-11-02 12:30:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29359622] [2024-11-02 12:30:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:21,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543506581] [2024-11-02 12:30:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:21,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:21,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:21,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:30:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:21,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:30:21,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:21,647 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 12:30:21,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:21,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29359622] [2024-11-02 12:30:21,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543506581] [2024-11-02 12:30:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543506581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:21,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:21,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107212078] [2024-11-02 12:30:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:21,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:21,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:21,653 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:30:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:21,956 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2024-11-02 12:30:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 24 [2024-11-02 12:30:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:21,958 INFO L225 Difference]: With dead ends: 184 [2024-11-02 12:30:21,959 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:30:21,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:21,960 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 138 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:21,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 180 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:30:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2024-11-02 12:30:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 101 states have (on average 1.7524752475247525) internal successors, (177), 150 states have internal predecessors, (177), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:30:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 201 transitions. [2024-11-02 12:30:21,977 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 201 transitions. Word has length 24 [2024-11-02 12:30:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:21,977 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 201 transitions. [2024-11-02 12:30:21,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:30:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 201 transitions. [2024-11-02 12:30:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:21,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:21,979 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 12:30:22,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:22,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:22,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:22,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -321872644, now seen corresponding path program 1 times [2024-11-02 12:30:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792180536] [2024-11-02 12:30:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:22,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579613687] [2024-11-02 12:30:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:22,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:22,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:22,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:22,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:30:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:22,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:30:22,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:22,276 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 12:30:22,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:22,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792180536] [2024-11-02 12:30:22,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:22,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579613687] [2024-11-02 12:30:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579613687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:22,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:22,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:22,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698459538] [2024-11-02 12:30:22,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:22,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:22,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:22,280 INFO L87 Difference]: Start difference. First operand 165 states and 201 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 12:30:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:22,439 INFO L93 Difference]: Finished difference Result 279 states and 357 transitions. [2024-11-02 12:30:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 12:30:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:22,442 INFO L225 Difference]: With dead ends: 279 [2024-11-02 12:30:22,442 INFO L226 Difference]: Without dead ends: 273 [2024-11-02 12:30:22,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:22,444 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 56 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:22,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:22,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-02 12:30:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 241. [2024-11-02 12:30:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 169 states have (on average 1.7100591715976332) internal successors, (289), 218 states have internal predecessors, (289), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:30:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 329 transitions. [2024-11-02 12:30:22,466 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 329 transitions. Word has length 25 [2024-11-02 12:30:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:22,467 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 329 transitions. [2024-11-02 12:30:22,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 12:30:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 329 transitions. [2024-11-02 12:30:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:30:22,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:22,468 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 12:30:22,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:22,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:22,669 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:22,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -676874114, now seen corresponding path program 1 times [2024-11-02 12:30:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613769448] [2024-11-02 12:30:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563706313] [2024-11-02 12:30:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:22,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:30:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:22,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:30:22,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:22,786 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 12:30:22,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:22,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613769448] [2024-11-02 12:30:22,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563706313] [2024-11-02 12:30:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563706313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700951664] [2024-11-02 12:30:22,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:22,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:22,792 INFO L87 Difference]: Start difference. First operand 241 states and 329 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 12:30:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:23,261 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2024-11-02 12:30:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 12:30:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:23,263 INFO L225 Difference]: With dead ends: 266 [2024-11-02 12:30:23,263 INFO L226 Difference]: Without dead ends: 265 [2024-11-02 12:30:23,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:23,265 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 101 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:23,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 233 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-02 12:30:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2024-11-02 12:30:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 169 states have (on average 1.698224852071006) internal successors, (287), 218 states have internal predecessors, (287), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:30:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 327 transitions. [2024-11-02 12:30:23,295 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 327 transitions. Word has length 25 [2024-11-02 12:30:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:23,295 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 327 transitions. [2024-11-02 12:30:23,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 12:30:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 327 transitions. [2024-11-02 12:30:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:30:23,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:23,297 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 12:30:23,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 12:30:23,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-02 12:30:23,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:23,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash 491739033, now seen corresponding path program 1 times [2024-11-02 12:30:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:23,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059983000] [2024-11-02 12:30:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:23,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387964924] [2024-11-02 12:30:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:23,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:23,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:23,536 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:23,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:30:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:23,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:30:23,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:23,816 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 12:30:23,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:23,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059983000] [2024-11-02 12:30:23,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387964924] [2024-11-02 12:30:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387964924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:23,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52240272] [2024-11-02 12:30:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:23,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:23,820 INFO L87 Difference]: Start difference. First operand 241 states and 327 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 12:30:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:24,516 INFO L93 Difference]: Finished difference Result 267 states and 332 transitions. [2024-11-02 12:30:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:24,517 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), 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 12:30:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:24,519 INFO L225 Difference]: With dead ends: 267 [2024-11-02 12:30:24,519 INFO L226 Difference]: Without dead ends: 266 [2024-11-02 12:30:24,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:24,520 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 57 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:24,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 307 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:30:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-02 12:30:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 241. [2024-11-02 12:30:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 169 states have (on average 1.6863905325443787) internal successors, (285), 218 states have internal predecessors, (285), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:30:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 325 transitions. [2024-11-02 12:30:24,539 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 325 transitions. Word has length 26 [2024-11-02 12:30:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:24,539 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 325 transitions. [2024-11-02 12:30:24,540 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), 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 12:30:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 325 transitions. [2024-11-02 12:30:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:30:24,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:24,541 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 12:30:24,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:24,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-02 12:30:24,746 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:24,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash -81960482, now seen corresponding path program 1 times [2024-11-02 12:30:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:24,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815492309] [2024-11-02 12:30:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:24,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:24,895 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 12:30:24,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:24,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815492309] [2024-11-02 12:30:24,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815492309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:24,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:24,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:24,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512286624] [2024-11-02 12:30:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:24,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:24,899 INFO L87 Difference]: Start difference. First operand 241 states and 325 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 12:30:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:25,203 INFO L93 Difference]: Finished difference Result 270 states and 335 transitions. [2024-11-02 12:30:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 27 [2024-11-02 12:30:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:25,205 INFO L225 Difference]: With dead ends: 270 [2024-11-02 12:30:25,206 INFO L226 Difference]: Without dead ends: 269 [2024-11-02 12:30:25,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:25,207 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 56 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:25,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 336 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-02 12:30:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 246. [2024-11-02 12:30:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 174 states have (on average 1.6781609195402298) internal successors, (292), 223 states have internal predecessors, (292), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:30:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 332 transitions. [2024-11-02 12:30:25,224 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 332 transitions. Word has length 27 [2024-11-02 12:30:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:25,224 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 332 transitions. [2024-11-02 12:30:25,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 12:30:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 332 transitions. [2024-11-02 12:30:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 12:30:25,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:25,226 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 12:30:25,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:30:25,226 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:25,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1754192517, now seen corresponding path program 1 times [2024-11-02 12:30:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986453700] [2024-11-02 12:30:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:25,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294193917] [2024-11-02 12:30:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:25,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:25,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:25,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:25,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:30:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:25,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:30:25,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:25,374 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 12:30:25,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:25,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:25,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986453700] [2024-11-02 12:30:25,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:25,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294193917] [2024-11-02 12:30:25,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294193917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:25,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:25,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:25,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208208313] [2024-11-02 12:30:25,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:25,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:25,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:25,377 INFO L87 Difference]: Start difference. First operand 246 states and 332 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 12:30:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:25,722 INFO L93 Difference]: Finished difference Result 287 states and 343 transitions. [2024-11-02 12:30:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 12:30:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:25,724 INFO L225 Difference]: With dead ends: 287 [2024-11-02 12:30:25,724 INFO L226 Difference]: Without dead ends: 286 [2024-11-02 12:30:25,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:25,725 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 153 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:25,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 336 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-02 12:30:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 248. [2024-11-02 12:30:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 176 states have (on average 1.6704545454545454) internal successors, (294), 225 states have internal predecessors, (294), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:30:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 334 transitions. [2024-11-02 12:30:25,746 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 334 transitions. Word has length 28 [2024-11-02 12:30:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:25,747 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 334 transitions. [2024-11-02 12:30:25,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 12:30:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 334 transitions. [2024-11-02 12:30:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 12:30:25,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:25,748 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] [2024-11-02 12:30:25,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 12:30:25,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:25,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:25,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2012736896, now seen corresponding path program 1 times [2024-11-02 12:30:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306678498] [2024-11-02 12:30:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:30:26,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306678498] [2024-11-02 12:30:26,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306678498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:30:26,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783352702] [2024-11-02 12:30:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:26,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:26,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:26,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:26,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:30:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:26,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:30:26,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:30:26,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:30:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:30:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783352702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:30:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [97576511] [2024-11-02 12:30:26,526 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-02 12:30:26,526 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:30:26,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:30:26,536 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:30:26,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:30:27,602 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-02 12:30:27,604 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:30:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [97576511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:30:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 5, 5] total 27 [2024-11-02 12:30:29,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896096410] [2024-11-02 12:30:29,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:29,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-02 12:30:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-02 12:30:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2024-11-02 12:30:29,616 INFO L87 Difference]: Start difference. First operand 248 states and 334 transitions. Second operand has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:30:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:30,972 INFO L93 Difference]: Finished difference Result 394 states and 516 transitions. [2024-11-02 12:30:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:30:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2024-11-02 12:30:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:30,975 INFO L225 Difference]: With dead ends: 394 [2024-11-02 12:30:30,975 INFO L226 Difference]: Without dead ends: 348 [2024-11-02 12:30:30,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-11-02 12:30:30,977 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 438 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:30,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 150 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-02 12:30:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-02 12:30:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 318. [2024-11-02 12:30:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 238 states have (on average 1.5714285714285714) internal successors, (374), 287 states have internal predecessors, (374), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-02 12:30:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 430 transitions. [2024-11-02 12:30:31,018 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 430 transitions. Word has length 31 [2024-11-02 12:30:31,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:31,018 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 430 transitions. [2024-11-02 12:30:31,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:30:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 430 transitions. [2024-11-02 12:30:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:30:31,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:31,021 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] [2024-11-02 12:30:31,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-02 12:30:31,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-02 12:30:31,225 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:31,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -615192625, now seen corresponding path program 1 times [2024-11-02 12:30:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279570222] [2024-11-02 12:30:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:31,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958642849] [2024-11-02 12:30:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:31,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:31,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:31,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:31,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 12:30:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:31,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:30:31,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:31,465 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 12:30:31,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:31,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279570222] [2024-11-02 12:30:31,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958642849] [2024-11-02 12:30:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958642849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:31,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863286523] [2024-11-02 12:30:31,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:31,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:31,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:31,468 INFO L87 Difference]: Start difference. First operand 318 states and 430 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:31,896 INFO L93 Difference]: Finished difference Result 396 states and 521 transitions. [2024-11-02 12:30:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:31,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2024-11-02 12:30:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:31,901 INFO L225 Difference]: With dead ends: 396 [2024-11-02 12:30:31,901 INFO L226 Difference]: Without dead ends: 393 [2024-11-02 12:30:31,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:30:31,903 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 218 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:31,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 184 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-02 12:30:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 374. [2024-11-02 12:30:31,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 335 states have internal predecessors, (434), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-02 12:30:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 506 transitions. [2024-11-02 12:30:31,958 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 506 transitions. Word has length 46 [2024-11-02 12:30:31,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:31,958 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 506 transitions. [2024-11-02 12:30:31,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 506 transitions. [2024-11-02 12:30:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 12:30:31,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:31,961 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] [2024-11-02 12:30:31,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-02 12:30:32,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-02 12:30:32,161 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:32,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1891102077, now seen corresponding path program 1 times [2024-11-02 12:30:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668583957] [2024-11-02 12:30:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245448673] [2024-11-02 12:30:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:32,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:32,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:32,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 12:30:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:32,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:30:32,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:32,356 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 12:30:32,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:30:32,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668583957] [2024-11-02 12:30:32,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245448673] [2024-11-02 12:30:32,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245448673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:32,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:32,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431795789] [2024-11-02 12:30:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:32,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:32,359 INFO L87 Difference]: Start difference. First operand 374 states and 506 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:32,802 INFO L93 Difference]: Finished difference Result 394 states and 515 transitions. [2024-11-02 12:30:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:30:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2024-11-02 12:30:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:32,805 INFO L225 Difference]: With dead ends: 394 [2024-11-02 12:30:32,805 INFO L226 Difference]: Without dead ends: 393 [2024-11-02 12:30:32,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:30:32,806 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 213 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:32,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 187 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-02 12:30:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 374. [2024-11-02 12:30:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5104895104895104) internal successors, (432), 335 states have internal predecessors, (432), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-02 12:30:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 504 transitions. [2024-11-02 12:30:32,855 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 504 transitions. Word has length 47 [2024-11-02 12:30:32,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:32,856 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 504 transitions. [2024-11-02 12:30:32,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 504 transitions. [2024-11-02 12:30:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-02 12:30:32,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:32,857 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:32,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-02 12:30:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-02 12:30:33,058 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1332532104, now seen corresponding path program 1 times [2024-11-02 12:30:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899678014] [2024-11-02 12:30:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:30:33,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899678014] [2024-11-02 12:30:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899678014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812709838] [2024-11-02 12:30:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:33,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:33,145 INFO L87 Difference]: Start difference. First operand 374 states and 504 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-02 12:30:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:33,936 INFO L93 Difference]: Finished difference Result 397 states and 517 transitions. [2024-11-02 12:30:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:33,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2024-11-02 12:30:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:33,938 INFO L225 Difference]: With dead ends: 397 [2024-11-02 12:30:33,939 INFO L226 Difference]: Without dead ends: 395 [2024-11-02 12:30:33,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:30:33,940 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 229 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:33,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 249 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:30:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-02 12:30:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 376. [2024-11-02 12:30:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 288 states have (on average 1.5) internal successors, (432), 337 states have internal predecessors, (432), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-02 12:30:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2024-11-02 12:30:34,013 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 51 [2024-11-02 12:30:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:34,014 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2024-11-02 12:30:34,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-02 12:30:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2024-11-02 12:30:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:30:34,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:34,015 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:34,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-02 12:30:34,016 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:34,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1641177855, now seen corresponding path program 1 times [2024-11-02 12:30:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31399765] [2024-11-02 12:30:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:30:34,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31399765] [2024-11-02 12:30:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31399765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:30:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766736004] [2024-11-02 12:30:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:34,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:30:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:30:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:34,130 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:34,758 INFO L93 Difference]: Finished difference Result 406 states and 513 transitions. [2024-11-02 12:30:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-02 12:30:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:34,761 INFO L225 Difference]: With dead ends: 406 [2024-11-02 12:30:34,762 INFO L226 Difference]: Without dead ends: 404 [2024-11-02 12:30:34,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:34,764 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 316 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:34,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 384 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-02 12:30:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 376. [2024-11-02 12:30:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 288 states have (on average 1.4930555555555556) internal successors, (430), 337 states have internal predecessors, (430), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-02 12:30:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 502 transitions. [2024-11-02 12:30:34,817 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 502 transitions. Word has length 52 [2024-11-02 12:30:34,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:34,817 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 502 transitions. [2024-11-02 12:30:34,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 502 transitions. [2024-11-02 12:30:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:30:34,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:34,819 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:34,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-02 12:30:34,819 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:34,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 918924942, now seen corresponding path program 1 times [2024-11-02 12:30:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99542612] [2024-11-02 12:30:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:30:34,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99542612] [2024-11-02 12:30:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99542612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923328672] [2024-11-02 12:30:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:34,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:34,894 INFO L87 Difference]: Start difference. First operand 376 states and 502 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:35,073 INFO L93 Difference]: Finished difference Result 523 states and 723 transitions. [2024-11-02 12:30:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2024-11-02 12:30:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:35,076 INFO L225 Difference]: With dead ends: 523 [2024-11-02 12:30:35,076 INFO L226 Difference]: Without dead ends: 522 [2024-11-02 12:30:35,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:35,078 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 23 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:35,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 213 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-02 12:30:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2024-11-02 12:30:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 379 states have (on average 1.517150395778364) internal successors, (575), 428 states have internal predecessors, (575), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-02 12:30:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 679 transitions. [2024-11-02 12:30:35,152 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 679 transitions. Word has length 54 [2024-11-02 12:30:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:35,153 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 679 transitions. [2024-11-02 12:30:35,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 679 transitions. [2024-11-02 12:30:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:30:35,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:35,154 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:35,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-02 12:30:35,154 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:35,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1578097731, now seen corresponding path program 1 times [2024-11-02 12:30:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642438882] [2024-11-02 12:30:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:30:35,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642438882] [2024-11-02 12:30:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642438882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:35,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:35,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:30:35,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130841931] [2024-11-02 12:30:35,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:35,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:30:35,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:35,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:30:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:35,260 INFO L87 Difference]: Start difference. First operand 483 states and 679 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:35,807 INFO L93 Difference]: Finished difference Result 500 states and 680 transitions. [2024-11-02 12:30:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2024-11-02 12:30:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:35,810 INFO L225 Difference]: With dead ends: 500 [2024-11-02 12:30:35,811 INFO L226 Difference]: Without dead ends: 499 [2024-11-02 12:30:35,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:35,812 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 206 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:35,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 328 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:30:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-02 12:30:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 483. [2024-11-02 12:30:35,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 379 states have (on average 1.5145118733509235) internal successors, (574), 428 states have internal predecessors, (574), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-02 12:30:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2024-11-02 12:30:35,901 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 55 [2024-11-02 12:30:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:35,901 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2024-11-02 12:30:35,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2024-11-02 12:30:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 12:30:35,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:35,903 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:35,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-02 12:30:35,903 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:35,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:35,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1676389264, now seen corresponding path program 1 times [2024-11-02 12:30:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124890042] [2024-11-02 12:30:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:30:36,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:36,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124890042] [2024-11-02 12:30:36,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124890042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:36,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:36,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810645418] [2024-11-02 12:30:36,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:36,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:36,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:36,005 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:36,255 INFO L93 Difference]: Finished difference Result 554 states and 733 transitions. [2024-11-02 12:30:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:36,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2024-11-02 12:30:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:36,258 INFO L225 Difference]: With dead ends: 554 [2024-11-02 12:30:36,258 INFO L226 Difference]: Without dead ends: 550 [2024-11-02 12:30:36,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:36,260 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 82 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:36,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 296 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:30:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-02 12:30:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 499. [2024-11-02 12:30:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 395 states have (on average 1.4987341772151899) internal successors, (592), 444 states have internal predecessors, (592), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-02 12:30:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 696 transitions. [2024-11-02 12:30:36,318 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 696 transitions. Word has length 56 [2024-11-02 12:30:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:36,319 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 696 transitions. [2024-11-02 12:30:36,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 12:30:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 696 transitions. [2024-11-02 12:30:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-02 12:30:36,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:36,320 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:36,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-02 12:30:36,320 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2024-11-02 12:30:36,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1635034248, now seen corresponding path program 1 times [2024-11-02 12:30:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435045539] [2024-11-02 12:30:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:30:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964199694] [2024-11-02 12:30:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:36,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:36,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:36,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_943a3e4b-989c-44b4-893b-938b5180b480/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-02 12:30:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:36,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:30:36,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:30:36,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:30:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:30:36,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435045539] [2024-11-02 12:30:36,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:30:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964199694] [2024-11-02 12:30:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964199694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:30:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [342528572] [2024-11-02 12:30:36,822 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2024-11-02 12:30:36,822 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:30:36,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:30:36,823 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:30:36,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:30:39,045 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-02 12:30:39,046 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-02 12:30:39,047 INFO L180 IcfgInterpreter]: Interpretation finished