./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b90cc16ef5a526e8275add9ef106c37f98806cd4be2a1de7d5feb4a1c25b3ebb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:37,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:37,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:00:37,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:37,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:37,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:37,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:37,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:37,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:37,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:37,562 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:37,562 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:37,563 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:37,565 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:00:37,565 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:37,566 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:37,566 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:00:37,567 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:00:37,567 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:37,568 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:00:37,568 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:00:37,569 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:00:37,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:37,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:00:37,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:37,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:37,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:37,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:37,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:00:37,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:37,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:00:37,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:37,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:00:37,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:37,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:37,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:37,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:37,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:37,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:37,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:00:37,577 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:00:37,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:00:37,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:00:37,578 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:37,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:37,579 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_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b90cc16ef5a526e8275add9ef106c37f98806cd4be2a1de7d5feb4a1c25b3ebb [2023-11-12 01:00:37,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:37,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:37,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:37,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:37,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:37,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2023-11-12 01:00:41,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:00:41,527 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:00:41,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/sv-benchmarks/c/eca-rers2012/Problem02_label48.c [2023-11-12 01:00:41,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/data/15ff31fa2/857cca10954f4d70a2d7734068e37d9c/FLAG53fa1d0fc [2023-11-12 01:00:41,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/data/15ff31fa2/857cca10954f4d70a2d7734068e37d9c [2023-11-12 01:00:41,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:00:41,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:00:41,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:41,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:00:41,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:00:41,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eac41ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41, skipping insertion in model container [2023-11-12 01:00:41,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:42,031 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2023-11-12 01:00:42,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:42,076 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:00:42,227 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/sv-benchmarks/c/eca-rers2012/Problem02_label48.c[20995,21008] [2023-11-12 01:00:42,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:42,250 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:00:42,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42 WrapperNode [2023-11-12 01:00:42,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:42,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:42,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:00:42,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:00:42,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,359 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2023-11-12 01:00:42,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:42,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:00:42,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:00:42,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:00:42,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:00:42,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:00:42,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:00:42,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:00:42,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (1/1) ... [2023-11-12 01:00:42,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:42,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:00:42,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:00:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:00:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:00:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:00:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:00:42,655 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:42,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:43,977 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:44,354 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:44,355 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 01:00:44,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:44 BoogieIcfgContainer [2023-11-12 01:00:44,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:44,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:44,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:44,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:44,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:00:41" (1/3) ... [2023-11-12 01:00:44,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f64e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:44, skipping insertion in model container [2023-11-12 01:00:44,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:42" (2/3) ... [2023-11-12 01:00:44,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f64e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:44, skipping insertion in model container [2023-11-12 01:00:44,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:44" (3/3) ... [2023-11-12 01:00:44,372 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2023-11-12 01:00:44,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:44,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:00:44,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:44,470 INFO L357 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, mHoare=true, 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;@4c7ad75c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:44,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:00:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 01:00:44,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:44,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:44,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:44,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1814585879, now seen corresponding path program 1 times [2023-11-12 01:00:44,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488981544] [2023-11-12 01:00:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:45,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488981544] [2023-11-12 01:00:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488981544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949957195] [2023-11-12 01:00:45,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:45,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:45,225 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:45,844 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2023-11-12 01:00:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-12 01:00:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:45,858 INFO L225 Difference]: With dead ends: 251 [2023-11-12 01:00:45,858 INFO L226 Difference]: Without dead ends: 163 [2023-11-12 01:00:45,862 INFO L412 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 [2023-11-12 01:00:45,865 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:45,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 01:00:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-12 01:00:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-12 01:00:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.808641975308642) internal successors, (293), 162 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 293 transitions. [2023-11-12 01:00:45,920 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 293 transitions. Word has length 80 [2023-11-12 01:00:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 293 transitions. [2023-11-12 01:00:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 293 transitions. [2023-11-12 01:00:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 01:00:45,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:45,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:00:45,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:45,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1153870570, now seen corresponding path program 1 times [2023-11-12 01:00:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:45,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133401630] [2023-11-12 01:00:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:46,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133401630] [2023-11-12 01:00:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133401630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:46,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:46,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615677241] [2023-11-12 01:00:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:46,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:46,120 INFO L87 Difference]: Start difference. First operand 163 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:46,602 INFO L93 Difference]: Finished difference Result 485 states and 876 transitions. [2023-11-12 01:00:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:46,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-12 01:00:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:46,606 INFO L225 Difference]: With dead ends: 485 [2023-11-12 01:00:46,606 INFO L226 Difference]: Without dead ends: 323 [2023-11-12 01:00:46,607 INFO L412 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 [2023-11-12 01:00:46,609 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 63 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-12 01:00:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-12 01:00:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5) internal successors, (483), 322 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2023-11-12 01:00:46,651 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 88 [2023-11-12 01:00:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:46,652 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2023-11-12 01:00:46,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2023-11-12 01:00:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-12 01:00:46,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:46,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:46,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:00:46,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:46,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1787468796, now seen corresponding path program 1 times [2023-11-12 01:00:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:46,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606254604] [2023-11-12 01:00:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:46,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606254604] [2023-11-12 01:00:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606254604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499505167] [2023-11-12 01:00:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:46,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:46,953 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:47,366 INFO L93 Difference]: Finished difference Result 965 states and 1446 transitions. [2023-11-12 01:00:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:47,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-12 01:00:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:47,371 INFO L225 Difference]: With dead ends: 965 [2023-11-12 01:00:47,371 INFO L226 Difference]: Without dead ends: 643 [2023-11-12 01:00:47,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:47,375 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-12 01:00:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 563. [2023-11-12 01:00:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4555160142348755) internal successors, (818), 562 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-11-12 01:00:47,424 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 89 [2023-11-12 01:00:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:47,426 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-11-12 01:00:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-11-12 01:00:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 01:00:47,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:47,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:00:47,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:47,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -699169223, now seen corresponding path program 1 times [2023-11-12 01:00:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739193515] [2023-11-12 01:00:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:00:47,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739193515] [2023-11-12 01:00:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739193515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282264124] [2023-11-12 01:00:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:47,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:47,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:47,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:47,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:00:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:47,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:00:47,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 01:00:48,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:48,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282264124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:48,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:48,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-12 01:00:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640832680] [2023-11-12 01:00:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:48,124 INFO L87 Difference]: Start difference. First operand 563 states and 818 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:48,549 INFO L93 Difference]: Finished difference Result 1445 states and 2106 transitions. [2023-11-12 01:00:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:48,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-12 01:00:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:48,555 INFO L225 Difference]: With dead ends: 1445 [2023-11-12 01:00:48,555 INFO L226 Difference]: Without dead ends: 883 [2023-11-12 01:00:48,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:48,569 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:48,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-12 01:00:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-12 01:00:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.4036281179138321) internal successors, (1238), 882 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1238 transitions. [2023-11-12 01:00:48,592 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1238 transitions. Word has length 93 [2023-11-12 01:00:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:48,592 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1238 transitions. [2023-11-12 01:00:48,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1238 transitions. [2023-11-12 01:00:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-12 01:00:48,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:48,595 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:48,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 01:00:48,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:48,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:48,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash 703496694, now seen corresponding path program 1 times [2023-11-12 01:00:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:48,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261107940] [2023-11-12 01:00:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:48,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 01:00:48,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261107940] [2023-11-12 01:00:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261107940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:48,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41674652] [2023-11-12 01:00:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:48,883 INFO L87 Difference]: Start difference. First operand 883 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:49,284 INFO L93 Difference]: Finished difference Result 2485 states and 3526 transitions. [2023-11-12 01:00:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:49,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-12 01:00:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:49,293 INFO L225 Difference]: With dead ends: 2485 [2023-11-12 01:00:49,293 INFO L226 Difference]: Without dead ends: 1523 [2023-11-12 01:00:49,297 INFO L412 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 [2023-11-12 01:00:49,298 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:49,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-11-12 01:00:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2023-11-12 01:00:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3508541392904074) internal successors, (2056), 1522 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2056 transitions. [2023-11-12 01:00:49,336 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2056 transitions. Word has length 95 [2023-11-12 01:00:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:49,336 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2056 transitions. [2023-11-12 01:00:49,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2056 transitions. [2023-11-12 01:00:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 01:00:49,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:49,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:00:49,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:49,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1651162926, now seen corresponding path program 1 times [2023-11-12 01:00:49,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:49,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051179099] [2023-11-12 01:00:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:00:49,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051179099] [2023-11-12 01:00:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051179099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:49,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:49,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677813076] [2023-11-12 01:00:49,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:49,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:49,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:49,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:49,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:49,546 INFO L87 Difference]: Start difference. First operand 1523 states and 2056 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:49,937 INFO L93 Difference]: Finished difference Result 3445 states and 4738 transitions. [2023-11-12 01:00:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-12 01:00:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:49,949 INFO L225 Difference]: With dead ends: 3445 [2023-11-12 01:00:49,949 INFO L226 Difference]: Without dead ends: 1923 [2023-11-12 01:00:49,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:49,952 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:49,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 137 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2023-11-12 01:00:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1843. [2023-11-12 01:00:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.3170466883821932) internal successors, (2426), 1842 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2426 transitions. [2023-11-12 01:00:50,000 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2426 transitions. Word has length 97 [2023-11-12 01:00:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:50,000 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2426 transitions. [2023-11-12 01:00:50,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2426 transitions. [2023-11-12 01:00:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 01:00:50,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:50,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:50,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:00:50,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:50,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1610326536, now seen corresponding path program 1 times [2023-11-12 01:00:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035519640] [2023-11-12 01:00:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:00:50,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:50,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035519640] [2023-11-12 01:00:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035519640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:50,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515023975] [2023-11-12 01:00:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:50,180 INFO L87 Difference]: Start difference. First operand 1843 states and 2426 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:50,571 INFO L93 Difference]: Finished difference Result 4005 states and 5241 transitions. [2023-11-12 01:00:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-12 01:00:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:50,584 INFO L225 Difference]: With dead ends: 4005 [2023-11-12 01:00:50,584 INFO L226 Difference]: Without dead ends: 2163 [2023-11-12 01:00:50,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:50,590 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:50,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 146 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:00:50,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-12 01:00:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2023-11-12 01:00:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2770582793709528) internal successors, (2761), 2162 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2761 transitions. [2023-11-12 01:00:50,648 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2761 transitions. Word has length 101 [2023-11-12 01:00:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2761 transitions. [2023-11-12 01:00:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2761 transitions. [2023-11-12 01:00:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-12 01:00:50,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:50,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:50,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:00:50,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:50,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash -985380189, now seen corresponding path program 1 times [2023-11-12 01:00:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308251119] [2023-11-12 01:00:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:00:51,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:51,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308251119] [2023-11-12 01:00:51,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308251119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:51,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675088147] [2023-11-12 01:00:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:51,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:51,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:51,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:51,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:00:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:51,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:00:51,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 01:00:51,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:00:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675088147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:51,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 01:00:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-12 01:00:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612882334] [2023-11-12 01:00:51,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:51,283 INFO L87 Difference]: Start difference. First operand 2163 states and 2761 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:51,666 INFO L93 Difference]: Finished difference Result 4325 states and 5521 transitions. [2023-11-12 01:00:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:51,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-12 01:00:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:51,680 INFO L225 Difference]: With dead ends: 4325 [2023-11-12 01:00:51,680 INFO L226 Difference]: Without dead ends: 2163 [2023-11-12 01:00:51,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:51,684 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:51,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 18 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:00:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-12 01:00:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2023-11-12 01:00:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2382053654024052) internal successors, (2677), 2162 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2677 transitions. [2023-11-12 01:00:51,750 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2677 transitions. Word has length 107 [2023-11-12 01:00:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:51,751 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2677 transitions. [2023-11-12 01:00:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2677 transitions. [2023-11-12 01:00:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-12 01:00:51,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:51,759 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:51,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 01:00:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 01:00:51,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:51,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2144463557, now seen corresponding path program 1 times [2023-11-12 01:00:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110509305] [2023-11-12 01:00:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-12 01:00:52,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110509305] [2023-11-12 01:00:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110509305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725995886] [2023-11-12 01:00:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:52,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:52,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:52,180 INFO L87 Difference]: Start difference. First operand 2163 states and 2677 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:52,386 INFO L93 Difference]: Finished difference Result 3923 states and 4891 transitions. [2023-11-12 01:00:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-12 01:00:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:52,388 INFO L225 Difference]: With dead ends: 3923 [2023-11-12 01:00:52,388 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 01:00:52,391 INFO L412 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 [2023-11-12 01:00:52,392 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 01:00:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 01:00:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 01:00:52,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2023-11-12 01:00:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:52,394 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 01:00:52,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 01:00:52,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 01:00:52,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 01:00:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:00:52,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 01:00:52,618 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2023-11-12 01:00:52,618 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2023-11-12 01:00:52,619 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2023-11-12 01:00:52,620 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2023-11-12 01:00:52,620 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2023-11-12 01:00:52,620 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2023-11-12 01:00:52,621 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2023-11-12 01:00:52,621 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2023-11-12 01:00:52,621 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2023-11-12 01:00:52,621 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2023-11-12 01:00:52,622 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2023-11-12 01:00:52,623 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2023-11-12 01:00:52,624 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L589-1(lines 39 608) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L592-1(lines 39 608) no Hoare annotation was computed. [2023-11-12 01:00:52,625 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point L593(line 593) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 593) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2023-11-12 01:00:52,626 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2023-11-12 01:00:52,627 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2023-11-12 01:00:52,628 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L610(lines 610 627) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2023-11-12 01:00:52,629 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2023-11-12 01:00:52,630 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2023-11-12 01:00:52,630 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2023-11-12 01:00:52,630 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2023-11-12 01:00:52,630 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2023-11-12 01:00:52,632 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (= ~a25~0 1)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= ~a28~0 10)) (and .cse1 .cse0 .cse2) (and .cse1 (<= ~a11~0 0) .cse2 (<= ~a28~0 7)))) [2023-11-12 01:00:52,632 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2023-11-12 01:00:52,632 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2023-11-12 01:00:52,632 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2023-11-12 01:00:52,632 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2023-11-12 01:00:52,632 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 01:00:52,633 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 39 608) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2023-11-12 01:00:52,634 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2023-11-12 01:00:52,638 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:52,640 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 01:00:52,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:00:52 BoogieIcfgContainer [2023-11-12 01:00:52,660 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 01:00:52,662 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 01:00:52,662 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 01:00:52,662 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 01:00:52,663 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:44" (3/4) ... [2023-11-12 01:00:52,664 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 01:00:52,695 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2023-11-12 01:00:52,697 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-12 01:00:52,699 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-12 01:00:52,700 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-12 01:00:52,882 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 01:00:52,882 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 01:00:52,882 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 01:00:52,883 INFO L158 Benchmark]: Toolchain (without parser) took 11319.80ms. Allocated memory was 140.5MB in the beginning and 251.7MB in the end (delta: 111.1MB). Free memory was 98.2MB in the beginning and 195.2MB in the end (delta: -97.1MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,883 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:00:52,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.44ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 91.5MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.12ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 85.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,885 INFO L158 Benchmark]: Boogie Preprocessor took 91.52ms. Allocated memory is still 140.5MB. Free memory was 85.8MB in the beginning and 81.5MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,885 INFO L158 Benchmark]: RCFGBuilder took 1906.63ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 81.5MB in the beginning and 107.3MB in the end (delta: -25.8MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,885 INFO L158 Benchmark]: TraceAbstraction took 8297.14ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 107.3MB in the beginning and 207.8MB in the end (delta: -100.5MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,886 INFO L158 Benchmark]: Witness Printer took 221.01ms. Allocated memory is still 251.7MB. Free memory was 207.8MB in the beginning and 195.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 01:00:52,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 107.0MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.44ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 91.5MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.12ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 85.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.52ms. Allocated memory is still 140.5MB. Free memory was 85.8MB in the beginning and 81.5MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1906.63ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 81.5MB in the beginning and 107.3MB in the end (delta: -25.8MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8297.14ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 107.3MB in the beginning and 207.8MB in the end (delta: -100.5MB). Peak memory consumption was 117.4MB. Max. memory is 16.1GB. * Witness Printer took 221.01ms. Allocated memory is still 251.7MB. Free memory was 207.8MB in the beginning and 195.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 593]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 533 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 533 mSDsluCounter, 611 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 497 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2130 IncrementalHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 497 mSolverCounterUnsat, 571 mSDtfsCounter, 2130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 24 NumberOfFragments, 31 HoareAnnotationTreeSize, 1 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 312 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1160 NumberOfCodeBlocks, 1160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1149 ConstructedInterpolants, 0 QuantifiedInterpolants, 3900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 388/412 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((a17 <= 8) && (a28 <= 10)) || (((a25 == 1) && (a17 <= 8)) && (a19 == 1))) || ((((a25 == 1) && (a11 <= 0)) && (a19 == 1)) && (a28 <= 7))) RESULT: Ultimate proved your program to be correct! [2023-11-12 01:00:52,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ec6611-0221-41d4-979c-c6f9a0a5bd2d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE