./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/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_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/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_86eecc4d-ee77-4246-8aa5-f6f484206afb/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 4ceae147c0993f09d1996333054d05cdb50149b89c2ec286f40c2e532c4f5e1a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:42:07,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:42:07,703 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:42:07,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:42:07,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:42:07,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:42:07,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:42:07,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:42:07,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:42:07,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:42:07,735 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:42:07,735 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:42:07,736 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:42:07,736 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:42:07,737 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:42:07,737 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:42:07,738 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:42:07,738 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:42:07,739 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:42:07,740 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:42:07,740 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:42:07,741 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:42:07,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:42:07,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:42:07,742 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:42:07,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:42:07,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:42:07,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:42:07,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:42:07,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:42:07,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:42:07,745 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:42:07,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:42:07,746 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:42:07,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:42:07,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:42:07,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:42:07,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:42:07,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:42:07,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:42:07,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:42:07,748 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:42:07,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:42:07,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:42:07,748 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:42:07,749 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:42:07,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:42:07,749 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_86eecc4d-ee77-4246-8aa5-f6f484206afb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceae147c0993f09d1996333054d05cdb50149b89c2ec286f40c2e532c4f5e1a [2023-12-02 15:42:07,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:42:07,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:42:07,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:42:07,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:42:07,989 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:42:07,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2023-12-02 15:42:10,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:42:11,024 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:42:11,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2023-12-02 15:42:11,038 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/data/a1f7bbc34/390205f24cdc4b9f8b4040c00819bd18/FLAGed22e3a9a [2023-12-02 15:42:11,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/data/a1f7bbc34/390205f24cdc4b9f8b4040c00819bd18 [2023-12-02 15:42:11,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:42:11,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:42:11,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:42:11,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:42:11,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:42:11,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbeada7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11, skipping insertion in model container [2023-12-02 15:42:11,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:42:11,367 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_86eecc4d-ee77-4246-8aa5-f6f484206afb/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2023-12-02 15:42:11,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:42:11,413 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:42:11,490 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_86eecc4d-ee77-4246-8aa5-f6f484206afb/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2023-12-02 15:42:11,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:42:11,525 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:42:11,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11 WrapperNode [2023-12-02 15:42:11,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:42:11,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:42:11,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:42:11,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:42:11,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,598 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2023-12-02 15:42:11,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:42:11,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:42:11,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:42:11,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:42:11,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:42:11,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:42:11,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:42:11,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:42:11,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (1/1) ... [2023-12-02 15:42:11,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:42:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:11,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:42:11,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:42:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:42:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:42:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:42:11,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:42:11,841 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:42:11,844 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:42:12,695 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:42:12,877 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:42:12,877 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:42:12,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:42:12 BoogieIcfgContainer [2023-12-02 15:42:12,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:42:12,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:42:12,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:42:12,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:42:12,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:42:11" (1/3) ... [2023-12-02 15:42:12,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514c303e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:42:12, skipping insertion in model container [2023-12-02 15:42:12,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:42:11" (2/3) ... [2023-12-02 15:42:12,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514c303e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:42:12, skipping insertion in model container [2023-12-02 15:42:12,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:42:12" (3/3) ... [2023-12-02 15:42:12,886 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label27.c [2023-12-02 15:42:12,900 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:42:12,900 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:42:12,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:42:12,945 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;@a82c65b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:42:12,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:42:12,949 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 15:42:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 15:42:12,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:12,957 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 15:42:12,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:12,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1230139598, now seen corresponding path program 1 times [2023-12-02 15:42:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:12,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058746462] [2023-12-02 15:42:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:13,287 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 15:42:13,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:13,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058746462] [2023-12-02 15:42:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058746462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:13,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:13,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:42:13,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376245918] [2023-12-02 15:42:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:13,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:13,326 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 15:42:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:13,738 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2023-12-02 15:42:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:13,740 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 15:42:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:13,748 INFO L225 Difference]: With dead ends: 224 [2023-12-02 15:42:13,748 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 15:42:13,750 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 15:42:13,753 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:13,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:42:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 15:42:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 15:42:13,800 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 15:42:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2023-12-02 15:42:13,804 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2023-12-02 15:42:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:13,804 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2023-12-02 15:42:13,805 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 15:42:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2023-12-02 15:42:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 15:42:13,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:13,809 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 15:42:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:42:13,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:13,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2025676058, now seen corresponding path program 1 times [2023-12-02 15:42:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386569408] [2023-12-02 15:42:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:13,892 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 15:42:13,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386569408] [2023-12-02 15:42:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386569408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:42:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192440069] [2023-12-02 15:42:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:13,896 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 15:42:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:14,237 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2023-12-02 15:42:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:14,237 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 15:42:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:14,241 INFO L225 Difference]: With dead ends: 431 [2023-12-02 15:42:14,241 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 15:42:14,242 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 15:42:14,244 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 15:42:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 15:42:14,268 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 15:42:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2023-12-02 15:42:14,270 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2023-12-02 15:42:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:14,270 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2023-12-02 15:42:14,271 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 15:42:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2023-12-02 15:42:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 15:42:14,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:14,274 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 15:42:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:42:14,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -730274212, now seen corresponding path program 1 times [2023-12-02 15:42:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69180673] [2023-12-02 15:42:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:14,437 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 15:42:14,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69180673] [2023-12-02 15:42:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69180673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:42:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378333185] [2023-12-02 15:42:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:14,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:14,441 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 15:42:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:14,754 INFO L93 Difference]: Finished difference Result 786 states and 1318 transitions. [2023-12-02 15:42:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:14,754 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 15:42:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:14,758 INFO L225 Difference]: With dead ends: 786 [2023-12-02 15:42:14,758 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 15:42:14,760 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 15:42:14,761 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:14,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 13 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 15:42:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-12-02 15:42:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6332665330661322) internal successors, (815), 499 states have internal predecessors, (815), 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 15:42:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 815 transitions. [2023-12-02 15:42:14,790 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 815 transitions. Word has length 80 [2023-12-02 15:42:14,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:14,790 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 815 transitions. [2023-12-02 15:42:14,791 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 15:42:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 815 transitions. [2023-12-02 15:42:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 15:42:14,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:14,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:14,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:42:14,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:14,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 579303890, now seen corresponding path program 1 times [2023-12-02 15:42:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96974267] [2023-12-02 15:42:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:14,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:42:14,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96974267] [2023-12-02 15:42:14,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96974267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:14,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:14,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:42:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451827667] [2023-12-02 15:42:14,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:14,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:14,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:14,980 INFO L87 Difference]: Start difference. First operand 500 states and 815 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 15:42:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:15,249 INFO L93 Difference]: Finished difference Result 999 states and 1629 transitions. [2023-12-02 15:42:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2023-12-02 15:42:15,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:15,253 INFO L225 Difference]: With dead ends: 999 [2023-12-02 15:42:15,253 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 15:42:15,254 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 15:42:15,256 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:15,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 15:42:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2023-12-02 15:42:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6092184368737474) internal successors, (803), 499 states have internal predecessors, (803), 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 15:42:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 803 transitions. [2023-12-02 15:42:15,273 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 803 transitions. Word has length 84 [2023-12-02 15:42:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 803 transitions. [2023-12-02 15:42:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 15:42:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 803 transitions. [2023-12-02 15:42:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:42:15,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:15,276 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 15:42:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:42:15,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:15,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2069667443, now seen corresponding path program 1 times [2023-12-02 15:42:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271789710] [2023-12-02 15:42:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:15,448 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 15:42:15,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271789710] [2023-12-02 15:42:15,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271789710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:15,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:15,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:42:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737415377] [2023-12-02 15:42:15,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:15,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:15,451 INFO L87 Difference]: Start difference. First operand 500 states and 803 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 15:42:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:15,765 INFO L93 Difference]: Finished difference Result 1212 states and 1902 transitions. [2023-12-02 15:42:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:15,766 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 15:42:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:15,770 INFO L225 Difference]: With dead ends: 1212 [2023-12-02 15:42:15,770 INFO L226 Difference]: Without dead ends: 713 [2023-12-02 15:42:15,771 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 15:42:15,773 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:15,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 58 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-12-02 15:42:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2023-12-02 15:42:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5210608424336973) internal successors, (975), 641 states have internal predecessors, (975), 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 15:42:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 975 transitions. [2023-12-02 15:42:15,799 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 975 transitions. Word has length 86 [2023-12-02 15:42:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 975 transitions. [2023-12-02 15:42:15,800 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 15:42:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 975 transitions. [2023-12-02 15:42:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 15:42:15,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:15,802 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 15:42:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:42:15,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:15,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 117980245, now seen corresponding path program 1 times [2023-12-02 15:42:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123553289] [2023-12-02 15:42:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:15,994 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 15:42:15,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123553289] [2023-12-02 15:42:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123553289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:15,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:15,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077855944] [2023-12-02 15:42:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:42:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:15,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:42:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:42:15,997 INFO L87 Difference]: Start difference. First operand 642 states and 975 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 15:42:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:16,424 INFO L93 Difference]: Finished difference Result 1496 states and 2210 transitions. [2023-12-02 15:42:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:42:16,424 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 15:42:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:16,429 INFO L225 Difference]: With dead ends: 1496 [2023-12-02 15:42:16,429 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 15:42:16,430 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 15:42:16,431 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:16,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 55 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:42:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 15:42:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-12-02 15:42:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4572158365261814) internal successors, (1141), 783 states have internal predecessors, (1141), 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 15:42:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1141 transitions. [2023-12-02 15:42:16,454 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1141 transitions. Word has length 90 [2023-12-02 15:42:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:16,455 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1141 transitions. [2023-12-02 15:42:16,455 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 15:42:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1141 transitions. [2023-12-02 15:42:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 15:42:16,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:16,457 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 15:42:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 15:42:16,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:16,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2078113430, now seen corresponding path program 1 times [2023-12-02 15:42:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:16,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500242823] [2023-12-02 15:42:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:42:16,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500242823] [2023-12-02 15:42:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500242823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:16,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631359541] [2023-12-02 15:42:16,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:16,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:16,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:16,645 INFO L87 Difference]: Start difference. First operand 784 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 15:42:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:16,956 INFO L93 Difference]: Finished difference Result 1638 states and 2358 transitions. [2023-12-02 15:42:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 15:42:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:16,962 INFO L225 Difference]: With dead ends: 1638 [2023-12-02 15:42:16,962 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 15:42:16,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:16,964 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:16,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 15:42:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2023-12-02 15:42:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3780332056194124) internal successors, (1079), 783 states have internal predecessors, (1079), 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 15:42:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1079 transitions. [2023-12-02 15:42:16,988 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1079 transitions. Word has length 108 [2023-12-02 15:42:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:16,988 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1079 transitions. [2023-12-02 15:42:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 15:42:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1079 transitions. [2023-12-02 15:42:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 15:42:16,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:16,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 15:42:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 15:42:16,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:16,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1761287861, now seen corresponding path program 1 times [2023-12-02 15:42:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842409771] [2023-12-02 15:42:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 15:42:17,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:17,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842409771] [2023-12-02 15:42:17,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842409771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:17,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502770996] [2023-12-02 15:42:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:17,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:17,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:17,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:17,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:42:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:17,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:42:17,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 15:42:17,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502770996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:17,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-02 15:42:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473245327] [2023-12-02 15:42:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:17,551 INFO L87 Difference]: Start difference. First operand 784 states and 1079 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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 15:42:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:17,827 INFO L93 Difference]: Finished difference Result 1212 states and 1621 transitions. [2023-12-02 15:42:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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 121 [2023-12-02 15:42:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:17,834 INFO L225 Difference]: With dead ends: 1212 [2023-12-02 15:42:17,834 INFO L226 Difference]: Without dead ends: 1210 [2023-12-02 15:42:17,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:17,836 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:17,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-12-02 15:42:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2023-12-02 15:42:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.339123242349049) internal successors, (1619), 1209 states have internal predecessors, (1619), 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 15:42:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1619 transitions. [2023-12-02 15:42:17,859 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1619 transitions. Word has length 121 [2023-12-02 15:42:17,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:17,860 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1619 transitions. [2023-12-02 15:42:17,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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 15:42:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1619 transitions. [2023-12-02 15:42:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 15:42:17,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:17,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 15:42:17,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:42:18,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:42:18,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:18,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 102641096, now seen corresponding path program 1 times [2023-12-02 15:42:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451415148] [2023-12-02 15:42:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 15:42:18,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451415148] [2023-12-02 15:42:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451415148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:42:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:42:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359714778] [2023-12-02 15:42:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:18,144 INFO L87 Difference]: Start difference. First operand 1210 states and 1619 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 15:42:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:18,436 INFO L93 Difference]: Finished difference Result 2632 states and 3541 transitions. [2023-12-02 15:42:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 128 [2023-12-02 15:42:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:18,444 INFO L225 Difference]: With dead ends: 2632 [2023-12-02 15:42:18,444 INFO L226 Difference]: Without dead ends: 1281 [2023-12-02 15:42:18,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:42:18,446 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:18,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 126 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2023-12-02 15:42:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2023-12-02 15:42:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.17311072056239) internal successors, (1335), 1138 states have internal predecessors, (1335), 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 15:42:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1335 transitions. [2023-12-02 15:42:18,500 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1335 transitions. Word has length 128 [2023-12-02 15:42:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:18,500 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1335 transitions. [2023-12-02 15:42:18,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 15:42:18,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1335 transitions. [2023-12-02 15:42:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 15:42:18,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:18,504 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:18,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 15:42:18,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:18,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1241061975, now seen corresponding path program 1 times [2023-12-02 15:42:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271812343] [2023-12-02 15:42:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 15:42:18,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271812343] [2023-12-02 15:42:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271812343] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365714884] [2023-12-02 15:42:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:18,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:18,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:18,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:42:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:18,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:42:18,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 15:42:18,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:18,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365714884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:18,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:18,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-02 15:42:18,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874249640] [2023-12-02 15:42:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:18,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:18,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:18,975 INFO L87 Difference]: Start difference. First operand 1139 states and 1335 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 15:42:19,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:19,260 INFO L93 Difference]: Finished difference Result 2987 states and 3521 transitions. [2023-12-02 15:42:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 135 [2023-12-02 15:42:19,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:19,269 INFO L225 Difference]: With dead ends: 2987 [2023-12-02 15:42:19,269 INFO L226 Difference]: Without dead ends: 1849 [2023-12-02 15:42:19,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 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 15:42:19,272 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:19,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 108 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:42:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2023-12-02 15:42:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1778. [2023-12-02 15:42:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 1.1631963984243106) internal successors, (2067), 1777 states have internal predecessors, (2067), 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 15:42:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2067 transitions. [2023-12-02 15:42:19,326 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2067 transitions. Word has length 135 [2023-12-02 15:42:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:19,327 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2067 transitions. [2023-12-02 15:42:19,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 15:42:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2067 transitions. [2023-12-02 15:42:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 15:42:19,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:19,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:19,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:42:19,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:42:19,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:19,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1073201299, now seen corresponding path program 1 times [2023-12-02 15:42:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:19,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70719715] [2023-12-02 15:42:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:19,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:42:19,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70719715] [2023-12-02 15:42:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70719715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613286025] [2023-12-02 15:42:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:19,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:19,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:19,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:19,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:42:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:19,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:42:19,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 15:42:20,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:20,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613286025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:20,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:20,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-02 15:42:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108535960] [2023-12-02 15:42:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:20,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:42:20,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:42:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:42:20,013 INFO L87 Difference]: Start difference. First operand 1778 states and 2067 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 15:42:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:20,268 INFO L93 Difference]: Finished difference Result 3910 states and 4588 transitions. [2023-12-02 15:42:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:42:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 138 [2023-12-02 15:42:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:20,279 INFO L225 Difference]: With dead ends: 3910 [2023-12-02 15:42:20,279 INFO L226 Difference]: Without dead ends: 2062 [2023-12-02 15:42:20,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 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 15:42:20,282 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:20,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 105 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:42:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2023-12-02 15:42:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1778. [2023-12-02 15:42:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1777 states have (on average 1.160945413618458) internal successors, (2063), 1777 states have internal predecessors, (2063), 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 15:42:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2063 transitions. [2023-12-02 15:42:20,328 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2063 transitions. Word has length 138 [2023-12-02 15:42:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2063 transitions. [2023-12-02 15:42:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 15:42:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2063 transitions. [2023-12-02 15:42:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 15:42:20,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:20,334 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 15:42:20,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:42:20,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:42:20,535 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:42:20,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1734653733, now seen corresponding path program 1 times [2023-12-02 15:42:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596024920] [2023-12-02 15:42:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 15:42:20,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596024920] [2023-12-02 15:42:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596024920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:42:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148233369] [2023-12-02 15:42:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:20,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:20,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:20,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:42:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:20,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:42:20,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 15:42:21,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:42:21,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148233369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:21,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:42:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-02 15:42:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063108848] [2023-12-02 15:42:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:42:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:21,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:42:21,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:21,051 INFO L87 Difference]: Start difference. First operand 1778 states and 2063 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 15:42:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:21,422 INFO L93 Difference]: Finished difference Result 3340 states and 3882 transitions. [2023-12-02 15:42:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:42:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 167 [2023-12-02 15:42:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:21,423 INFO L225 Difference]: With dead ends: 3340 [2023-12-02 15:42:21,423 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:42:21,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:42:21,426 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:21,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 29 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:42:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:42:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:42:21,427 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 15:42:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:42:21,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 167 [2023-12-02 15:42:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:21,428 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:42:21,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 15:42:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:42:21,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:42:21,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:42:21,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:42:21,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:42:21,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:42:22,052 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-12-02 15:42:22,052 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-12-02 15:42:22,053 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-12-02 15:42:22,054 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-12-02 15:42:22,054 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-12-02 15:42:22,054 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-12-02 15:42:22,055 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-12-02 15:42:22,056 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-12-02 15:42:22,057 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-12-02 15:42:22,057 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-12-02 15:42:22,058 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 604) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-12-02 15:42:22,059 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-12-02 15:42:22,060 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-12-02 15:42:22,061 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-12-02 15:42:22,061 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-12-02 15:42:22,061 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-12-02 15:42:22,061 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a20~0 0)) (.cse5 (not (= ~a7~0 1))) (.cse2 (<= ~a16~0 5)) (.cse4 (= ~a21~0 1)) (.cse7 (= ~a17~0 1)) (.cse1 (<= ~a8~0 13)) (.cse6 (= ~a16~0 6)) (.cse3 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse2) (and .cse5 .cse4 .cse2 .cse3) (and .cse0 .cse6 .cse4) (and .cse1 .cse4 .cse7 .cse3) (and .cse6 .cse5 .cse4 .cse3) (and (<= ~a8~0 14) .cse4 .cse2) (and (<= ~a7~0 0) .cse4 .cse7 .cse3) (and .cse1 .cse6 .cse3))) [2023-12-02 15:42:22,061 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-12-02 15:42:22,061 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 40 585) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 450) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-12-02 15:42:22,062 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-12-02 15:42:22,065 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:22,067 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:42:22,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:42:22 BoogieIcfgContainer [2023-12-02 15:42:22,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:42:22,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:42:22,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:42:22,080 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:42:22,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:42:12" (3/4) ... [2023-12-02 15:42:22,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:42:22,100 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2023-12-02 15:42:22,101 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-12-02 15:42:22,103 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 15:42:22,104 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:42:22,257 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:42:22,258 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:42:22,258 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:42:22,258 INFO L158 Benchmark]: Toolchain (without parser) took 11202.36ms. Allocated memory was 140.5MB in the beginning and 297.8MB in the end (delta: 157.3MB). Free memory was 96.3MB in the beginning and 132.0MB in the end (delta: -35.7MB). Peak memory consumption was 122.6MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,259 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:42:22,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.60ms. Allocated memory is still 140.5MB. Free memory was 96.3MB in the beginning and 68.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.51ms. Allocated memory is still 140.5MB. Free memory was 68.0MB in the beginning and 62.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,260 INFO L158 Benchmark]: Boogie Preprocessor took 65.56ms. Allocated memory is still 140.5MB. Free memory was 62.2MB in the beginning and 58.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,260 INFO L158 Benchmark]: RCFGBuilder took 1214.17ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 58.0MB in the beginning and 130.8MB in the end (delta: -72.7MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,261 INFO L158 Benchmark]: TraceAbstraction took 9198.49ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 129.7MB in the beginning and 144.6MB in the end (delta: -14.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,261 INFO L158 Benchmark]: Witness Printer took 177.76ms. Allocated memory is still 297.8MB. Free memory was 144.6MB in the beginning and 132.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:42:22,263 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 113.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.60ms. Allocated memory is still 140.5MB. Free memory was 96.3MB in the beginning and 68.5MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.51ms. Allocated memory is still 140.5MB. Free memory was 68.0MB in the beginning and 62.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.56ms. Allocated memory is still 140.5MB. Free memory was 62.2MB in the beginning and 58.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1214.17ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 58.0MB in the beginning and 130.8MB in the end (delta: -72.7MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9198.49ms. Allocated memory was 205.5MB in the beginning and 297.8MB in the end (delta: 92.3MB). Free memory was 129.7MB in the beginning and 144.6MB in the end (delta: -14.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 177.76ms. Allocated memory is still 297.8MB. Free memory was 144.6MB in the beginning and 132.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 450]: 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: 9.1s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 741 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 741 mSDsluCounter, 758 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 621 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2735 IncrementalHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 621 mSolverCounterUnsat, 705 mSDtfsCounter, 2735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1778occurred in iteration=10, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 27 NumberOfFragments, 115 HoareAnnotationTreeSize, 1 FomulaSimplifications, 435 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 1 FomulaSimplificationsInter, 619 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1845 NumberOfCodeBlocks, 1845 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1829 ConstructedInterpolants, 0 QuantifiedInterpolants, 4424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1233 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 979/1034 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: ((((((((((((a20 <= 0) && (a8 <= 13)) && (a16 <= 5)) || (((a8 <= 13) && (a16 <= 5)) && (a20 == 1))) || (((a20 <= 0) && (a21 == 1)) && (a16 <= 5))) || (((!((a7 == 1)) && (a21 == 1)) && (a16 <= 5)) && (a20 == 1))) || (((a20 <= 0) && (a16 == 6)) && (a21 == 1))) || ((((a8 <= 13) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) || ((((a16 == 6) && !((a7 == 1))) && (a21 == 1)) && (a20 == 1))) || (((a8 <= 14) && (a21 == 1)) && (a16 <= 5))) || ((((a7 <= 0) && (a21 == 1)) && (a17 == 1)) && (a20 == 1))) || (((a8 <= 13) && (a16 == 6)) && (a20 == 1))) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:42:22,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86eecc4d-ee77-4246-8aa5-f6f484206afb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE