./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire --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 61e7be63d8e367b5f988006276e044c9c346c537d002ac6b15fa75838eb4df4d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:22,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:23,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:31:23,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:23,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:23,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:23,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:23,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:23,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:23,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:23,064 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:23,065 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:23,066 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:23,070 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:31:23,071 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:23,072 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:23,073 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:31:23,074 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:31:23,074 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:23,075 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:31:23,075 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:31:23,076 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:31:23,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:23,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:23,078 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:31:23,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:31:23,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:31:23,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:23,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:23,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:23,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:23,082 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:31:23,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:23,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:23,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:23,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:23,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:23,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:23,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:23,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:23,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:23,086 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:31:23,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:31:23,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:23,087 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:23,088 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:23,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:23,088 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_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61e7be63d8e367b5f988006276e044c9c346c537d002ac6b15fa75838eb4df4d [2023-11-23 20:31:23,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:23,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:23,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:23,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:23,417 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:23,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2023-11-23 20:31:26,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:26,856 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:26,857 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2023-11-23 20:31:26,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/data/4c894564d/1f4dfe2b10034c3ea8d370417afecefb/FLAG4b285e964 [2023-11-23 20:31:26,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/data/4c894564d/1f4dfe2b10034c3ea8d370417afecefb [2023-11-23 20:31:26,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:26,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:26,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:26,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:26,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:26,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:26" (1/1) ... [2023-11-23 20:31:26,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b82f948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:26, skipping insertion in model container [2023-11-23 20:31:26,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:26" (1/1) ... [2023-11-23 20:31:26,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:27,343 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_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2023-11-23 20:31:27,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:27,393 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:27,496 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_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2023-11-23 20:31:27,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:27,530 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:31:27,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27 WrapperNode [2023-11-23 20:31:27,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:27,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:27,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:31:27,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:31:27,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,632 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2023-11-23 20:31:27,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:27,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:31:27,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:31:27,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:31:27,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:31:27,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:31:27,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:31:27,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:31:27,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (1/1) ... [2023-11-23 20:31:27,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:27,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:27,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:31:27,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:31:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:31:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:31:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:31:27,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:31:27,901 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:31:27,904 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:31:29,058 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:31:29,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:31:29,432 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:31:29,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:29 BoogieIcfgContainer [2023-11-23 20:31:29,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:31:29,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:31:29,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:31:29,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:31:29,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:26" (1/3) ... [2023-11-23 20:31:29,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b47416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:29, skipping insertion in model container [2023-11-23 20:31:29,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:27" (2/3) ... [2023-11-23 20:31:29,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b47416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:29, skipping insertion in model container [2023-11-23 20:31:29,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:29" (3/3) ... [2023-11-23 20:31:29,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2023-11-23 20:31:29,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:31:29,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:31:29,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:31:29,538 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;@6dc21efa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:31:29,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:31:29,542 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) [2023-11-23 20:31:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 20:31:29,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:29,551 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] [2023-11-23 20:31:29,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:29,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 672080085, now seen corresponding path program 1 times [2023-11-23 20:31:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323612576] [2023-11-23 20:31:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:31:30,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323612576] [2023-11-23 20:31:30,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323612576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:30,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049114856] [2023-11-23 20:31:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:30,178 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) [2023-11-23 20:31:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:30,808 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2023-11-23 20:31:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:30,811 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 [2023-11-23 20:31:30,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:30,832 INFO L225 Difference]: With dead ends: 251 [2023-11-23 20:31:30,832 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 20:31:30,837 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 [2023-11-23 20:31:30,845 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:30,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:31:30,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 20:31:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-23 20:31:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:31:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2023-11-23 20:31:30,932 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2023-11-23 20:31:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:30,935 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2023-11-23 20:31:30,935 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) [2023-11-23 20:31:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2023-11-23 20:31:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 20:31:30,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:30,940 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:31:30,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:30,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2025369963, now seen corresponding path program 1 times [2023-11-23 20:31:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174312891] [2023-11-23 20:31:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:31:31,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174312891] [2023-11-23 20:31:31,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174312891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258171887] [2023-11-23 20:31:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:31,193 INFO L87 Difference]: Start difference. First operand 163 states and 313 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) [2023-11-23 20:31:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:31,636 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2023-11-23 20:31:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:31,638 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 91 [2023-11-23 20:31:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:31,641 INFO L225 Difference]: With dead ends: 487 [2023-11-23 20:31:31,641 INFO L226 Difference]: Without dead ends: 325 [2023-11-23 20:31:31,643 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 [2023-11-23 20:31:31,644 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:31,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:31:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-23 20:31:31,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2023-11-23 20:31:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2023-11-23 20:31:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2023-11-23 20:31:31,682 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2023-11-23 20:31:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:31,683 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2023-11-23 20:31:31,683 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) [2023-11-23 20:31:31,684 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2023-11-23 20:31:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 20:31:31,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:31,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:31,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:31:31,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:31,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1263766998, now seen corresponding path program 1 times [2023-11-23 20:31:31,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:31,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249432282] [2023-11-23 20:31:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:31:32,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249432282] [2023-11-23 20:31:32,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249432282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:32,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:32,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072602303] [2023-11-23 20:31:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:32,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:32,116 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-11-23 20:31:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:32,539 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2023-11-23 20:31:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 [2023-11-23 20:31:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:32,543 INFO L225 Difference]: With dead ends: 885 [2023-11-23 20:31:32,543 INFO L226 Difference]: Without dead ends: 563 [2023-11-23 20:31:32,546 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 [2023-11-23 20:31:32,547 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:32,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:31:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-23 20:31:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2023-11-23 20:31:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2023-11-23 20:31:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2023-11-23 20:31:32,574 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2023-11-23 20:31:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:32,574 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2023-11-23 20:31:32,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2023-11-23 20:31:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2023-11-23 20:31:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 20:31:32,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:32,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-23 20:31:32,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:31:32,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:32,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -857317489, now seen corresponding path program 1 times [2023-11-23 20:31:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65224999] [2023-11-23 20:31:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:31:32,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:32,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65224999] [2023-11-23 20:31:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65224999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:32,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:31:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950625456] [2023-11-23 20:31:32,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:32,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:32,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:32,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:32,757 INFO L87 Difference]: Start difference. First operand 483 states and 779 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) [2023-11-23 20:31:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:33,212 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2023-11-23 20:31:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:33,213 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 100 [2023-11-23 20:31:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:33,218 INFO L225 Difference]: With dead ends: 1205 [2023-11-23 20:31:33,218 INFO L226 Difference]: Without dead ends: 723 [2023-11-23 20:31:33,219 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 [2023-11-23 20:31:33,220 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 78 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 138 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 [2023-11-23 20:31:33,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 138 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:31:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-23 20:31:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2023-11-23 20:31:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.4750692520775623) internal successors, (1065), 722 states have internal predecessors, (1065), 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) [2023-11-23 20:31:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1065 transitions. [2023-11-23 20:31:33,245 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1065 transitions. Word has length 100 [2023-11-23 20:31:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:33,245 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1065 transitions. [2023-11-23 20:31:33,246 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) [2023-11-23 20:31:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1065 transitions. [2023-11-23 20:31:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 20:31:33,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:33,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 20:31:33,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:31:33,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:33,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1471113817, now seen corresponding path program 1 times [2023-11-23 20:31:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196516326] [2023-11-23 20:31:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:31:33,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196516326] [2023-11-23 20:31:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196516326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:33,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582509077] [2023-11-23 20:31:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:33,335 INFO L87 Difference]: Start difference. First operand 723 states and 1065 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) [2023-11-23 20:31:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:33,744 INFO L93 Difference]: Finished difference Result 1925 states and 2912 transitions. [2023-11-23 20:31:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:33,745 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 101 [2023-11-23 20:31:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:33,752 INFO L225 Difference]: With dead ends: 1925 [2023-11-23 20:31:33,752 INFO L226 Difference]: Without dead ends: 1203 [2023-11-23 20:31:33,754 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 [2023-11-23 20:31:33,755 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 [2023-11-23 20:31:33,756 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] [2023-11-23 20:31:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-23 20:31:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2023-11-23 20:31:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.4334442595673877) internal successors, (1723), 1202 states have internal predecessors, (1723), 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) [2023-11-23 20:31:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1723 transitions. [2023-11-23 20:31:33,793 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1723 transitions. Word has length 101 [2023-11-23 20:31:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:33,794 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1723 transitions. [2023-11-23 20:31:33,794 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) [2023-11-23 20:31:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1723 transitions. [2023-11-23 20:31:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 20:31:33,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:33,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 20:31:33,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:31:33,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:33,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 647054725, now seen corresponding path program 1 times [2023-11-23 20:31:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:33,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131927802] [2023-11-23 20:31:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:31:33,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131927802] [2023-11-23 20:31:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131927802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:31:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884597398] [2023-11-23 20:31:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:33,967 INFO L87 Difference]: Start difference. First operand 1203 states and 1723 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) [2023-11-23 20:31:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:34,382 INFO L93 Difference]: Finished difference Result 2885 states and 4077 transitions. [2023-11-23 20:31:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:34,387 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 104 [2023-11-23 20:31:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:34,397 INFO L225 Difference]: With dead ends: 2885 [2023-11-23 20:31:34,398 INFO L226 Difference]: Without dead ends: 1683 [2023-11-23 20:31:34,400 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 [2023-11-23 20:31:34,403 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:34,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 146 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:31:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-11-23 20:31:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2023-11-23 20:31:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.334720570749108) internal successors, (2245), 1682 states have internal predecessors, (2245), 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) [2023-11-23 20:31:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2245 transitions. [2023-11-23 20:31:34,462 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2245 transitions. Word has length 104 [2023-11-23 20:31:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:34,462 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2245 transitions. [2023-11-23 20:31:34,462 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) [2023-11-23 20:31:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2245 transitions. [2023-11-23 20:31:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 20:31:34,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:34,466 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] [2023-11-23 20:31:34,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:31:34,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:34,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:34,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1167723301, now seen corresponding path program 1 times [2023-11-23 20:31:34,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:34,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356696402] [2023-11-23 20:31:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:34,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:31:34,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:34,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356696402] [2023-11-23 20:31:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356696402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:31:34,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706044101] [2023-11-23 20:31:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:34,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:31:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:34,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:31:34,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:31:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:35,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:31:35,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:31:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:31:35,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:31:35,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706044101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:35,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:31:35,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-23 20:31:35,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914710251] [2023-11-23 20:31:35,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:35,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:35,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:35,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:31:35,238 INFO L87 Difference]: Start difference. First operand 1683 states and 2245 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) [2023-11-23 20:31:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:35,593 INFO L93 Difference]: Finished difference Result 3365 states and 4489 transitions. [2023-11-23 20:31:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:35,594 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 [2023-11-23 20:31:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:35,603 INFO L225 Difference]: With dead ends: 3365 [2023-11-23 20:31:35,604 INFO L226 Difference]: Without dead ends: 1683 [2023-11-23 20:31:35,606 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 [2023-11-23 20:31:35,607 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 [2023-11-23 20:31:35,607 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] [2023-11-23 20:31:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-11-23 20:31:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1283. [2023-11-23 20:31:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.2121684867394695) internal successors, (1554), 1282 states have internal predecessors, (1554), 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) [2023-11-23 20:31:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1554 transitions. [2023-11-23 20:31:35,645 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1554 transitions. Word has length 107 [2023-11-23 20:31:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:35,645 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1554 transitions. [2023-11-23 20:31:35,646 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) [2023-11-23 20:31:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1554 transitions. [2023-11-23 20:31:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 20:31:35,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:35,649 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:35,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 20:31:35,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 20:31:35,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:35,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1312881236, now seen corresponding path program 1 times [2023-11-23 20:31:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:35,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044633496] [2023-11-23 20:31:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 20:31:35,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044633496] [2023-11-23 20:31:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044633496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:35,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:31:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903332073] [2023-11-23 20:31:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:35,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:35,986 INFO L87 Difference]: Start difference. First operand 1283 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 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) [2023-11-23 20:31:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:36,384 INFO L93 Difference]: Finished difference Result 2885 states and 3607 transitions. [2023-11-23 20:31:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 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 124 [2023-11-23 20:31:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:36,394 INFO L225 Difference]: With dead ends: 2885 [2023-11-23 20:31:36,394 INFO L226 Difference]: Without dead ends: 1603 [2023-11-23 20:31:36,396 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 [2023-11-23 20:31:36,397 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 68 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:36,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 147 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:31:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2023-11-23 20:31:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1523. [2023-11-23 20:31:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.240473061760841) internal successors, (1888), 1522 states have internal predecessors, (1888), 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) [2023-11-23 20:31:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1888 transitions. [2023-11-23 20:31:36,438 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1888 transitions. Word has length 124 [2023-11-23 20:31:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:36,439 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1888 transitions. [2023-11-23 20:31:36,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 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) [2023-11-23 20:31:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1888 transitions. [2023-11-23 20:31:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-23 20:31:36,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:36,444 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] [2023-11-23 20:31:36,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 20:31:36,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:36,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash 70439427, now seen corresponding path program 1 times [2023-11-23 20:31:36,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:36,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093661219] [2023-11-23 20:31:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 20:31:36,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:31:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093661219] [2023-11-23 20:31:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093661219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:36,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677034576] [2023-11-23 20:31:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:31:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:31:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:31:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:31:36,720 INFO L87 Difference]: Start difference. First operand 1523 states and 1888 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) [2023-11-23 20:31:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:36,950 INFO L93 Difference]: Finished difference Result 2723 states and 3428 transitions. [2023-11-23 20:31:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:31:36,951 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 [2023-11-23 20:31:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:36,951 INFO L225 Difference]: With dead ends: 2723 [2023-11-23 20:31:36,951 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:31:36,955 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 [2023-11-23 20:31:36,958 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-11-23 20:31:36,959 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] [2023-11-23 20:31:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:31:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:31:36,961 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) [2023-11-23 20:31:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:31:36,961 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2023-11-23 20:31:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:36,961 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:31:36,962 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) [2023-11-23 20:31:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:31:36,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:31:36,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:31:36,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 20:31:36,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:31:37,170 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2023-11-23 20:31:37,170 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2023-11-23 20:31:37,170 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2023-11-23 20:31:37,171 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2023-11-23 20:31:37,172 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2023-11-23 20:31:37,173 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2023-11-23 20:31:37,174 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2023-11-23 20:31:37,175 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 554) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2023-11-23 20:31:37,176 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2023-11-23 20:31:37,177 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2023-11-23 20:31:37,178 INFO L899 garLoopResultBuilder]: For program point L610(lines 610 627) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2023-11-23 20:31:37,179 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2023-11-23 20:31:37,180 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (= ~a25~0 1)) (.cse0 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= ~a28~0 10)) (and (= ~a17~0 8) .cse1 .cse2) (and .cse1 (= ~a11~0 0) .cse0 .cse2))) [2023-11-23 20:31:37,180 INFO L899 garLoopResultBuilder]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2023-11-23 20:31:37,180 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2023-11-23 20:31:37,180 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L554(line 554) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2023-11-23 20:31:37,181 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2023-11-23 20:31:37,182 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2023-11-23 20:31:37,183 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 39 608) no Hoare annotation was computed. [2023-11-23 20:31:37,183 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2023-11-23 20:31:37,183 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2023-11-23 20:31:37,183 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2023-11-23 20:31:37,186 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:37,188 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:31:37,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:31:37 BoogieIcfgContainer [2023-11-23 20:31:37,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:31:37,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:31:37,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:31:37,201 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:31:37,201 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:29" (3/4) ... [2023-11-23 20:31:37,203 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:31:37,222 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 128 nodes and edges [2023-11-23 20:31:37,224 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 20:31:37,225 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 20:31:37,227 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:31:37,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:31:37,386 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:31:37,386 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:31:37,387 INFO L158 Benchmark]: Toolchain (without parser) took 10496.59ms. Allocated memory was 205.5MB in the beginning and 312.5MB in the end (delta: 107.0MB). Free memory was 160.0MB in the beginning and 180.6MB in the end (delta: -20.6MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,387 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:37,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.89ms. Allocated memory is still 205.5MB. Free memory was 159.5MB in the beginning and 132.7MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.81ms. Allocated memory is still 205.5MB. Free memory was 132.7MB in the beginning and 127.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,388 INFO L158 Benchmark]: Boogie Preprocessor took 109.50ms. Allocated memory is still 205.5MB. Free memory was 126.9MB in the beginning and 122.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,388 INFO L158 Benchmark]: RCFGBuilder took 1690.70ms. Allocated memory is still 205.5MB. Free memory was 122.7MB in the beginning and 126.8MB in the end (delta: -4.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,389 INFO L158 Benchmark]: TraceAbstraction took 7762.78ms. Allocated memory was 205.5MB in the beginning and 312.5MB in the end (delta: 107.0MB). Free memory was 126.8MB in the beginning and 194.2MB in the end (delta: -67.4MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,389 INFO L158 Benchmark]: Witness Printer took 185.39ms. Allocated memory is still 312.5MB. Free memory was 194.2MB in the beginning and 180.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:31:37,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 77.5MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.89ms. Allocated memory is still 205.5MB. Free memory was 159.5MB in the beginning and 132.7MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.81ms. Allocated memory is still 205.5MB. Free memory was 132.7MB in the beginning and 127.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.50ms. Allocated memory is still 205.5MB. Free memory was 126.9MB in the beginning and 122.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1690.70ms. Allocated memory is still 205.5MB. Free memory was 122.7MB in the beginning and 126.8MB in the end (delta: -4.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7762.78ms. Allocated memory was 205.5MB in the beginning and 312.5MB in the end (delta: 107.0MB). Free memory was 126.8MB in the beginning and 194.2MB in the end (delta: -67.4MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 185.39ms. Allocated memory is still 312.5MB. Free memory was 194.2MB in the beginning and 180.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. 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: 554]: 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: 7.7s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 706 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 706 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 530 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2104 IncrementalHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 530 mSolverCounterUnsat, 537 mSDtfsCounter, 2104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1683occurred in iteration=6, 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 562 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 16 NumberOfFragments, 31 HoareAnnotationTreeSize, 1 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1119 NumberOfCodeBlocks, 1119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3323 SizeOfPredicates, 0 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 464/480 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)) || (((a17 == 8) && (a25 == 1)) && (a19 == 1))) || ((((a25 == 1) && (a11 == 0)) && (a17 <= 8)) && (a19 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:31:37,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47d5d0cb-baa6-4bea-9f76-e2c9fe78e688/bin/utaipan-verify-mE87zJ7Ire/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