./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh --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 1c88cc194103d022b94f7566a6fbb0060b2ca3bc51aa069da2e93bf3455dff41 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:39:22,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:39:22,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:39:22,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:39:22,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:39:22,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:39:22,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:39:22,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:39:22,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:39:22,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:39:22,149 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:39:22,149 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:39:22,150 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:39:22,151 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:39:22,151 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:39:22,152 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:39:22,152 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:39:22,153 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:39:22,153 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:39:22,154 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:39:22,155 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:39:22,156 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:39:22,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:39:22,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:39:22,158 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:39:22,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:39:22,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:39:22,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:39:22,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:39:22,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:39:22,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:39:22,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:39:22,162 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:39:22,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:39:22,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:39:22,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:39:22,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:39:22,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:22,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:39:22,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:39:22,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:39:22,164 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:39:22,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:39:22,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:39:22,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:39:22,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:39:22,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:39:22,165 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_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c88cc194103d022b94f7566a6fbb0060b2ca3bc51aa069da2e93bf3455dff41 [2023-12-02 19:39:22,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:39:22,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:39:22,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:39:22,470 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:39:22,471 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:39:22,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2023-12-02 19:39:25,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:39:26,220 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:39:26,220 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2023-12-02 19:39:26,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/data/a11baa396/cada07b6220240efbb62562bdbb36a87/FLAGfcebe2c6f [2023-12-02 19:39:26,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/data/a11baa396/cada07b6220240efbb62562bdbb36a87 [2023-12-02 19:39:26,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:39:26,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:39:26,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:26,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:39:26,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:39:26,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462007e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26, skipping insertion in model container [2023-12-02 19:39:26,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:39:26,680 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_3734c727-a4b2-4642-ae40-ea875877e10c/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2023-12-02 19:39:26,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:26,720 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:39:26,849 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_3734c727-a4b2-4642-ae40-ea875877e10c/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2023-12-02 19:39:26,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:26,878 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:39:26,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26 WrapperNode [2023-12-02 19:39:26,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:26,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:26,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:39:26,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:39:26,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,970 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-12-02 19:39:26,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:26,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:39:26,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:39:26,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:39:26,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:26,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:39:27,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:39:27,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:39:27,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:39:27,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (1/1) ... [2023-12-02 19:39:27,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:39:27,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:39:27,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:39:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:39:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:39:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:39:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:39:27,263 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:39:27,266 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:39:28,350 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:39:28,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:39:28,591 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:39:28,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:28 BoogieIcfgContainer [2023-12-02 19:39:28,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:39:28,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:39:28,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:39:28,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:39:28,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:39:26" (1/3) ... [2023-12-02 19:39:28,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2248df32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:28, skipping insertion in model container [2023-12-02 19:39:28,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:26" (2/3) ... [2023-12-02 19:39:28,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2248df32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:28, skipping insertion in model container [2023-12-02 19:39:28,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:28" (3/3) ... [2023-12-02 19:39:28,605 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2023-12-02 19:39:28,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:39:28,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:39:28,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:39:28,682 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;@4ad2ad5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:39:28,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:39:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2023-12-02 19:39:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 19:39:28,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:28,697 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] [2023-12-02 19:39:28,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:28,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1230157975, now seen corresponding path program 1 times [2023-12-02 19:39:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198465862] [2023-12-02 19:39:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:29,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198465862] [2023-12-02 19:39:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198465862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:29,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060192022] [2023-12-02 19:39:29,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:29,172 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2023-12-02 19:39:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:29,683 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-12-02 19:39:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2023-12-02 19:39:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:29,700 INFO L225 Difference]: With dead ends: 224 [2023-12-02 19:39:29,700 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 19:39:29,704 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 [2023-12-02 19:39:29,709 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:29,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 19:39:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 19:39:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2023-12-02 19:39:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2023-12-02 19:39:29,762 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2023-12-02 19:39:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:29,763 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2023-12-02 19:39:29,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2023-12-02 19:39:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2023-12-02 19:39:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 19:39:29,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:29,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:39:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:39:29,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2025657681, now seen corresponding path program 1 times [2023-12-02 19:39:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230244533] [2023-12-02 19:39:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:29,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230244533] [2023-12-02 19:39:29,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230244533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:29,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:29,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031064325] [2023-12-02 19:39:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:29,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:29,904 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2023-12-02 19:39:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:30,362 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2023-12-02 19:39:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:30,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2023-12-02 19:39:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:30,367 INFO L225 Difference]: With dead ends: 431 [2023-12-02 19:39:30,367 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 19:39:30,369 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 [2023-12-02 19:39:30,371 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:30,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 19:39:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 19:39:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6783216783216783) internal successors, (480), 286 states have internal predecessors, (480), 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) [2023-12-02 19:39:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2023-12-02 19:39:30,428 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2023-12-02 19:39:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:30,428 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2023-12-02 19:39:30,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2023-12-02 19:39:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2023-12-02 19:39:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 19:39:30,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:30,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:30,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:39:30,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:30,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash -730255835, now seen corresponding path program 1 times [2023-12-02 19:39:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:30,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601316343] [2023-12-02 19:39:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:30,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:30,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601316343] [2023-12-02 19:39:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601316343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:30,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:30,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663396725] [2023-12-02 19:39:30,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:30,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:30,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:30,605 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. 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) [2023-12-02 19:39:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:31,053 INFO L93 Difference]: Finished difference Result 786 states and 1318 transitions. [2023-12-02 19:39:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:31,054 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 [2023-12-02 19:39:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:31,059 INFO L225 Difference]: With dead ends: 786 [2023-12-02 19:39:31,059 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 19:39:31,062 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 [2023-12-02 19:39:31,064 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:31,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 15 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 19:39:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-12-02 19:39:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.629258517034068) internal successors, (813), 499 states have internal predecessors, (813), 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) [2023-12-02 19:39:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 813 transitions. [2023-12-02 19:39:31,102 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 813 transitions. Word has length 80 [2023-12-02 19:39:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:31,102 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 813 transitions. [2023-12-02 19:39:31,103 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) [2023-12-02 19:39:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 813 transitions. [2023-12-02 19:39:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 19:39:31,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:31,109 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:39:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:39:31,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:31,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2069649066, now seen corresponding path program 1 times [2023-12-02 19:39:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349337209] [2023-12-02 19:39:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:31,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349337209] [2023-12-02 19:39:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349337209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:31,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265152335] [2023-12-02 19:39:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:31,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:31,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:31,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:31,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:31,430 INFO L87 Difference]: Start difference. First operand 500 states and 813 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-12-02 19:39:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:31,816 INFO L93 Difference]: Finished difference Result 1212 states and 1934 transitions. [2023-12-02 19:39:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2023-12-02 19:39:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:31,823 INFO L225 Difference]: With dead ends: 1212 [2023-12-02 19:39:31,823 INFO L226 Difference]: Without dead ends: 713 [2023-12-02 19:39:31,825 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 [2023-12-02 19:39:31,827 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:31,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-02 19:39:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2023-12-02 19:39:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.546021840873635) internal successors, (991), 641 states have internal predecessors, (991), 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) [2023-12-02 19:39:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 991 transitions. [2023-12-02 19:39:31,853 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 991 transitions. Word has length 86 [2023-12-02 19:39:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 991 transitions. [2023-12-02 19:39:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2023-12-02 19:39:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 991 transitions. [2023-12-02 19:39:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 19:39:31,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:31,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-02 19:39:31,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:39:31,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:31,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 368614150, now seen corresponding path program 1 times [2023-12-02 19:39:31,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:31,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245910798] [2023-12-02 19:39:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:31,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 19:39:32,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245910798] [2023-12-02 19:39:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245910798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016406411] [2023-12-02 19:39:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:32,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:32,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:32,028 INFO L87 Difference]: Start difference. First operand 642 states and 991 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:39:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:32,386 INFO L93 Difference]: Finished difference Result 1425 states and 2214 transitions. [2023-12-02 19:39:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:32,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-02 19:39:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:32,394 INFO L225 Difference]: With dead ends: 1425 [2023-12-02 19:39:32,394 INFO L226 Difference]: Without dead ends: 784 [2023-12-02 19:39:32,395 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 [2023-12-02 19:39:32,397 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:32,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 62 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:39:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-02 19:39:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2023-12-02 19:39:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4865900383141764) internal successors, (1164), 783 states have internal predecessors, (1164), 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) [2023-12-02 19:39:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1164 transitions. [2023-12-02 19:39:32,429 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1164 transitions. Word has length 87 [2023-12-02 19:39:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1164 transitions. [2023-12-02 19:39:32,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:39:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1164 transitions. [2023-12-02 19:39:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 19:39:32,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:32,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 19:39:32,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:39:32,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:32,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:32,435 INFO L85 PathProgramCache]: Analyzing trace with hash 117998622, now seen corresponding path program 1 times [2023-12-02 19:39:32,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:32,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064156676] [2023-12-02 19:39:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:32,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:32,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:32,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064156676] [2023-12-02 19:39:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064156676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:32,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:39:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756329914] [2023-12-02 19:39:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:32,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:39:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:39:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:32,673 INFO L87 Difference]: Start difference. First operand 784 states and 1164 transitions. Second operand has 4 states, 4 states have (on average 22.5) 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) [2023-12-02 19:39:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:33,210 INFO L93 Difference]: Finished difference Result 1780 states and 2594 transitions. [2023-12-02 19:39:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:39:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) 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 90 [2023-12-02 19:39:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:33,218 INFO L225 Difference]: With dead ends: 1780 [2023-12-02 19:39:33,219 INFO L226 Difference]: Without dead ends: 997 [2023-12-02 19:39:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:39:33,221 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:33,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 55 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:39:33,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-02 19:39:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2023-12-02 19:39:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.4313513513513514) internal successors, (1324), 925 states have internal predecessors, (1324), 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) [2023-12-02 19:39:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1324 transitions. [2023-12-02 19:39:33,251 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1324 transitions. Word has length 90 [2023-12-02 19:39:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:33,252 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1324 transitions. [2023-12-02 19:39:33,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) 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) [2023-12-02 19:39:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1324 transitions. [2023-12-02 19:39:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 19:39:33,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:33,254 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:33,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:39:33,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:33,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2078131807, now seen corresponding path program 1 times [2023-12-02 19:39:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596261872] [2023-12-02 19:39:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:33,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 19:39:33,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:33,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596261872] [2023-12-02 19:39:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596261872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:39:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:39:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031823244] [2023-12-02 19:39:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:33,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:39:33,444 INFO L87 Difference]: Start difference. First operand 926 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2023-12-02 19:39:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:33,802 INFO L93 Difference]: Finished difference Result 1141 states and 1604 transitions. [2023-12-02 19:39:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 108 [2023-12-02 19:39:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:33,812 INFO L225 Difference]: With dead ends: 1141 [2023-12-02 19:39:33,812 INFO L226 Difference]: Without dead ends: 1139 [2023-12-02 19:39:33,813 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 [2023-12-02 19:39:33,814 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:33,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:39:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2023-12-02 19:39:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 855. [2023-12-02 19:39:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4437939110070257) internal successors, (1233), 854 states have internal predecessors, (1233), 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) [2023-12-02 19:39:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1233 transitions. [2023-12-02 19:39:33,850 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1233 transitions. Word has length 108 [2023-12-02 19:39:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1233 transitions. [2023-12-02 19:39:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2023-12-02 19:39:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1233 transitions. [2023-12-02 19:39:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 19:39:33,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:39:33,855 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:39:33,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:39:33,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:39:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash 270680488, now seen corresponding path program 1 times [2023-12-02 19:39:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:39:33,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816214903] [2023-12-02 19:39:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:33,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:39:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 19:39:34,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:39:34,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816214903] [2023-12-02 19:39:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816214903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:39:34,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773934362] [2023-12-02 19:39:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:39:34,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:39:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:39:34,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:39:34,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:39:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:39:34,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:39:34,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:39:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-02 19:39:34,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:39:34,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773934362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:39:34,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:39:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-02 19:39:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429112467] [2023-12-02 19:39:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:39:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:39:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:39:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:39:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:39:34,814 INFO L87 Difference]: Start difference. First operand 855 states and 1233 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-12-02 19:39:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:39:35,213 INFO L93 Difference]: Finished difference Result 1920 states and 2743 transitions. [2023-12-02 19:39:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:39:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 176 [2023-12-02 19:39:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:39:35,216 INFO L225 Difference]: With dead ends: 1920 [2023-12-02 19:39:35,216 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:39:35,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:39:35,219 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:39:35,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:39:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:39:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:39:35,221 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) [2023-12-02 19:39:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:39:35,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2023-12-02 19:39:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:39:35,222 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:39:35,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-12-02 19:39:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:39:35,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:39:35,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:39:35,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:39:35,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 19:39:35,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:39:35,576 INFO L899 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2023-12-02 19:39:35,576 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-12-02 19:39:35,577 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-12-02 19:39:35,578 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-12-02 19:39:35,578 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-12-02 19:39:35,578 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-12-02 19:39:35,578 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-12-02 19:39:35,579 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-12-02 19:39:35,579 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-12-02 19:39:35,579 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-12-02 19:39:35,579 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-12-02 19:39:35,580 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-12-02 19:39:35,580 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-12-02 19:39:35,580 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-12-02 19:39:35,580 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-12-02 19:39:35,580 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-12-02 19:39:35,581 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-12-02 19:39:35,581 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-12-02 19:39:35,581 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-12-02 19:39:35,581 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-12-02 19:39:35,582 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-12-02 19:39:35,582 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-12-02 19:39:35,582 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-12-02 19:39:35,582 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-12-02 19:39:35,582 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-12-02 19:39:35,583 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-12-02 19:39:35,583 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-12-02 19:39:35,583 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-12-02 19:39:35,583 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-12-02 19:39:35,584 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-12-02 19:39:35,584 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-12-02 19:39:35,584 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-12-02 19:39:35,584 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-12-02 19:39:35,584 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-12-02 19:39:35,585 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-12-02 19:39:35,585 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-12-02 19:39:35,585 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-12-02 19:39:35,585 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-12-02 19:39:35,586 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-12-02 19:39:35,587 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-12-02 19:39:35,587 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-12-02 19:39:35,587 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-12-02 19:39:35,587 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-12-02 19:39:35,587 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-12-02 19:39:35,588 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:39:35,588 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-12-02 19:39:35,588 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-12-02 19:39:35,588 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-12-02 19:39:35,588 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-12-02 19:39:35,589 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-12-02 19:39:35,589 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-12-02 19:39:35,589 INFO L899 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2023-12-02 19:39:35,590 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (and .cse0 (<= ~a16~0 5)) (and .cse0 (= ~a17~0 1) (= ~a20~0 1)) (< ~a8~0 14) (and .cse0 (<= 15 ~a8~0)))) [2023-12-02 19:39:35,590 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-12-02 19:39:35,590 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 564) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-12-02 19:39:35,591 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-12-02 19:39:35,592 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-12-02 19:39:35,592 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-12-02 19:39:35,595 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:39:35,597 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:39:35,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:39:35 BoogieIcfgContainer [2023-12-02 19:39:35,610 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:39:35,610 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:39:35,610 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:39:35,611 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:39:35,611 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:28" (3/4) ... [2023-12-02 19:39:35,613 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:39:35,635 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2023-12-02 19:39:35,636 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-02 19:39:35,638 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 19:39:35,639 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:39:35,857 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:39:35,858 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:39:35,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:39:35,859 INFO L158 Benchmark]: Toolchain (without parser) took 9598.29ms. Allocated memory was 140.5MB in the beginning and 285.2MB in the end (delta: 144.7MB). Free memory was 96.8MB in the beginning and 239.4MB in the end (delta: -142.6MB). Peak memory consumption was 128.0MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,859 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:39:35,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.28ms. Allocated memory is still 140.5MB. Free memory was 96.4MB in the beginning and 68.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.14ms. Allocated memory is still 140.5MB. Free memory was 68.6MB in the beginning and 62.9MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,861 INFO L158 Benchmark]: Boogie Preprocessor took 106.46ms. Allocated memory is still 140.5MB. Free memory was 62.9MB in the beginning and 106.7MB in the end (delta: -43.9MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,861 INFO L158 Benchmark]: RCFGBuilder took 1515.30ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 106.7MB in the beginning and 106.7MB in the end (delta: 12.5kB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,861 INFO L158 Benchmark]: TraceAbstraction took 7012.84ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 105.6MB in the beginning and 72.0MB in the end (delta: 33.6MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,862 INFO L158 Benchmark]: Witness Printer took 247.62ms. Allocated memory was 237.0MB in the beginning and 285.2MB in the end (delta: 48.2MB). Free memory was 72.0MB in the beginning and 239.4MB in the end (delta: -167.4MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-12-02 19:39:35,865 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.28ms. Allocated memory is still 140.5MB. Free memory was 96.4MB in the beginning and 68.6MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.14ms. Allocated memory is still 140.5MB. Free memory was 68.6MB in the beginning and 62.9MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.46ms. Allocated memory is still 140.5MB. Free memory was 62.9MB in the beginning and 106.7MB in the end (delta: -43.9MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1515.30ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 106.7MB in the beginning and 106.7MB in the end (delta: 12.5kB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7012.84ms. Allocated memory was 197.1MB in the beginning and 237.0MB in the end (delta: 39.8MB). Free memory was 105.6MB in the beginning and 72.0MB in the end (delta: 33.6MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 247.62ms. Allocated memory was 237.0MB in the beginning and 285.2MB in the end (delta: 48.2MB). Free memory was 72.0MB in the beginning and 239.4MB in the end (delta: -167.4MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 564]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 516 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 516 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 508 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1805 IncrementalHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 508 mSolverCounterUnsat, 354 mSDtfsCounter, 1805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=6, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 426 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 16 NumberOfFragments, 28 HoareAnnotationTreeSize, 1 FomulaSimplifications, 357 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 950 NumberOfCodeBlocks, 950 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 941 ConstructedInterpolants, 0 QuantifiedInterpolants, 2188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 437 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 520/526 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: 593]: Loop Invariant Derived loop invariant: (((((a21 == 1) && (a16 <= 5)) || (((a21 == 1) && (a17 == 1)) && (a20 == 1))) || (a8 < 14)) || ((a21 == 1) && (15 <= a8))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:39:35,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3734c727-a4b2-4642-ae40-ea875877e10c/bin/utaipan-verify-nQ1chXbOIh/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