./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/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_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/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 64bit --witnessprinter.graph.data.programhash ec179c2b0ae29cffe9fd88f2044fb26f554ea0dd1abcec6f41fd07a61f74c869 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:54:13,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:54:13,787 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 18:54:13,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:54:13,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:54:13,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:54:13,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:54:13,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:54:13,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:54:13,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:54:13,817 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:54:13,817 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:54:13,818 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:54:13,818 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:54:13,819 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:54:13,819 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:54:13,820 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:54:13,820 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:54:13,821 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:54:13,821 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:54:13,822 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:54:13,822 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:54:13,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:54:13,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:54:13,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:54:13,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:54:13,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:54:13,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:54:13,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:54:13,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:54:13,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:54:13,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:54:13,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:54:13,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:54:13,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:54:13,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:54:13,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:54:13,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:54:13,828 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:54:13,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:54:13,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:54:13,829 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:54:13,829 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:54:13,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:54:13,830 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec179c2b0ae29cffe9fd88f2044fb26f554ea0dd1abcec6f41fd07a61f74c869 [2023-12-02 18:54:14,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:54:14,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:54:14,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:54:14,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:54:14,074 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:54:14,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2023-12-02 18:54:16,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:54:17,011 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:54:17,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2023-12-02 18:54:17,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/0b925c5d2/8248f3a1237e42b7ba2f7b24cd0c1a87/FLAGcc1b9a096 [2023-12-02 18:54:17,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/0b925c5d2/8248f3a1237e42b7ba2f7b24cd0c1a87 [2023-12-02 18:54:17,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:54:17,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:54:17,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:54:17,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:54:17,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:54:17,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a21857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17, skipping insertion in model container [2023-12-02 18:54:17,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:54:17,221 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1245,1258] [2023-12-02 18:54:17,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:54:17,281 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:54:17,291 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1245,1258] [2023-12-02 18:54:17,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:54:17,334 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:54:17,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17 WrapperNode [2023-12-02 18:54:17,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:54:17,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:54:17,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:54:17,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:54:17,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,402 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 287 [2023-12-02 18:54:17,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:54:17,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:54:17,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:54:17,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:54:17,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:54:17,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:54:17,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:54:17,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:54:17,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (1/1) ... [2023-12-02 18:54:17,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:54:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:17,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:54:17,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:54:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:54:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:54:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:54:17,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:54:17,626 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:54:17,628 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:54:18,017 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:54:18,234 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:54:18,234 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:54:18,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:18 BoogieIcfgContainer [2023-12-02 18:54:18,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:54:18,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:54:18,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:54:18,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:54:18,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:54:17" (1/3) ... [2023-12-02 18:54:18,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315c2908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:18, skipping insertion in model container [2023-12-02 18:54:18,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:17" (2/3) ... [2023-12-02 18:54:18,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315c2908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:18, skipping insertion in model container [2023-12-02 18:54:18,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:18" (3/3) ... [2023-12-02 18:54:18,243 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2023-12-02 18:54:18,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:54:18,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:54:18,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:54:18,299 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;@d2c6cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:54:18,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:54:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 18:54:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:54:18,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:18,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:54:18,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:18,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 8287117, now seen corresponding path program 1 times [2023-12-02 18:54:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719113647] [2023-12-02 18:54:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:54:18,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:54:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:54:18,708 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:54:18,709 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:54:18,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:54:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:54:18,717 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 18:54:18,721 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:54:18,738 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 18:54:18,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:54:18 BoogieIcfgContainer [2023-12-02 18:54:18,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:54:18,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:54:18,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:54:18,748 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:54:18,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:18" (3/4) ... [2023-12-02 18:54:18,751 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:54:18,752 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:54:18,753 INFO L158 Benchmark]: Toolchain (without parser) took 1716.65ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 97.4MB in the beginning and 115.1MB in the end (delta: -17.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2023-12-02 18:54:18,754 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:18,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.79ms. Allocated memory is still 140.5MB. Free memory was 97.0MB in the beginning and 83.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 18:54:18,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.64ms. Allocated memory is still 140.5MB. Free memory was 83.6MB in the beginning and 77.7MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:54:18,756 INFO L158 Benchmark]: Boogie Preprocessor took 60.77ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 75.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:54:18,756 INFO L158 Benchmark]: RCFGBuilder took 770.89ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 74.8MB in the beginning and 78.0MB in the end (delta: -3.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-12-02 18:54:18,757 INFO L158 Benchmark]: TraceAbstraction took 509.45ms. Allocated memory is still 169.9MB. Free memory was 77.0MB in the beginning and 115.1MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:18,757 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 169.9MB. Free memory was 115.1MB in the beginning and 115.1MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:18,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.79ms. Allocated memory is still 140.5MB. Free memory was 97.0MB in the beginning and 83.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.64ms. Allocated memory is still 140.5MB. Free memory was 83.6MB in the beginning and 77.7MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.77ms. Allocated memory is still 140.5MB. Free memory was 77.7MB in the beginning and 75.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.89ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 74.8MB in the beginning and 78.0MB in the end (delta: -3.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 509.45ms. Allocated memory is still 169.9MB. Free memory was 77.0MB in the beginning and 115.1MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 169.9MB. Free memory was 115.1MB in the beginning and 115.1MB in the end (delta: 2.7kB). There was no memory consumed. 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 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 2); [L30] const SORT_11 msb_SORT_11 = (SORT_11)1 << (2 - 1); [L32] const SORT_15 mask_SORT_15 = (SORT_15)-1 >> (sizeof(SORT_15) * 8 - 32); [L33] const SORT_15 msb_SORT_15 = (SORT_15)1 << (32 - 1); [L35] const SORT_1 var_5 = 0; [L36] const SORT_11 var_12 = 0; [L37] const SORT_15 var_17 = 2; [L38] const SORT_1 var_22 = 1; [L39] const SORT_11 var_39 = 1; [L41] SORT_1 input_2; [L42] SORT_1 input_3; [L43] SORT_1 input_4; [L44] SORT_11 input_26; [L45] SORT_11 input_40; [L46] SORT_1 input_45; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L48] SORT_1 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L49] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_11 [L50] SORT_11 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L51] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 init_7_arg_1 = var_5; [L54] state_6 = init_7_arg_1 [L55] SORT_1 init_9_arg_1 = var_5; [L56] state_8 = init_9_arg_1 [L57] SORT_11 init_14_arg_1 = var_12; [L58] state_13 = init_14_arg_1 [L59] SORT_1 init_32_arg_1 = var_5; [L60] state_31 = init_32_arg_1 VAL [init_14_arg_1=0, init_32_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_11=3, mask_SORT_15=4294967295, mask_SORT_1=1, msb_SORT_11=2, msb_SORT_15=2147483648, msb_SORT_1=1, state_13=0, state_31=0, state_6=0, state_8=0, var_12=0, var_17=2, var_22=1, var_39=1, var_5=0] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] EXPR input_2 & mask_SORT_1 [L64] input_2 = input_2 & mask_SORT_1 [L65] input_3 = __VERIFIER_nondet_uchar() [L66] EXPR input_3 & mask_SORT_1 [L66] input_3 = input_3 & mask_SORT_1 [L67] input_4 = __VERIFIER_nondet_uchar() [L68] input_26 = __VERIFIER_nondet_uchar() [L69] input_40 = __VERIFIER_nondet_uchar() [L70] input_45 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_10_arg_0 = state_6; [L74] SORT_1 var_10_arg_1 = state_8; [L75] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L76] SORT_11 var_16_arg_0 = state_13; [L77] EXPR var_16_arg_0 & mask_SORT_11 [L77] var_16_arg_0 = var_16_arg_0 & mask_SORT_11 [L78] SORT_15 var_16 = var_16_arg_0; [L79] SORT_15 var_18_arg_0 = var_16; [L80] SORT_15 var_18_arg_1 = var_17; [L81] SORT_1 var_18 = var_18_arg_0 != var_18_arg_1; [L82] SORT_1 var_19_arg_0 = var_10; [L83] SORT_1 var_19_arg_1 = var_18; [L84] EXPR var_19_arg_0 & var_19_arg_1 [L84] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L85] SORT_1 var_23_arg_0 = var_19; [L86] SORT_1 var_23 = ~var_23_arg_0; [L87] SORT_1 var_24_arg_0 = var_22; [L88] SORT_1 var_24_arg_1 = var_23; [L89] EXPR var_24_arg_0 & var_24_arg_1 [L89] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L90] EXPR var_24 & mask_SORT_1 [L90] var_24 = var_24 & mask_SORT_1 [L91] SORT_1 bad_25_arg_0 = var_24; [L92] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 18:54:18,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/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_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/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 64bit --witnessprinter.graph.data.programhash ec179c2b0ae29cffe9fd88f2044fb26f554ea0dd1abcec6f41fd07a61f74c869 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:54:20,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:54:20,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 18:54:20,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:54:20,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:54:20,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:54:20,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:54:20,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:54:20,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:54:20,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:54:20,874 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:54:20,874 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:54:20,875 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:54:20,875 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:54:20,876 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:54:20,876 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:54:20,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:54:20,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:54:20,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:54:20,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:54:20,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:54:20,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:54:20,880 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:54:20,881 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:54:20,881 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:54:20,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:54:20,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:54:20,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:54:20,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:54:20,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:54:20,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:54:20,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:54:20,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:54:20,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:54:20,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:54:20,885 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:54:20,886 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:20,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:54:20,886 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:54:20,886 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:54:20,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:54:20,887 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec179c2b0ae29cffe9fd88f2044fb26f554ea0dd1abcec6f41fd07a61f74c869 [2023-12-02 18:54:21,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:54:21,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:54:21,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:54:21,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:54:21,193 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:54:21,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2023-12-02 18:54:24,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:54:24,539 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:54:24,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c [2023-12-02 18:54:24,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/ea648d38c/1f06bc1925a54787b46d4ae506174411/FLAG68d642ccc [2023-12-02 18:54:24,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/data/ea648d38c/1f06bc1925a54787b46d4ae506174411 [2023-12-02 18:54:24,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:54:24,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:54:24,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:54:24,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:54:24,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:54:24,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418f6e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24, skipping insertion in model container [2023-12-02 18:54:24,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:54:24,748 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1245,1258] [2023-12-02 18:54:24,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:54:24,821 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:54:24,835 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_0d21ebe8-74d7-4291-9833-7fe585156a1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b06.c[1245,1258] [2023-12-02 18:54:24,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:54:24,882 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:54:24,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24 WrapperNode [2023-12-02 18:54:24,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:54:24,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:54:24,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:54:24,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:54:24,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,936 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 157 [2023-12-02 18:54:24,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:54:24,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:54:24,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:54:24,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:54:24,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,953 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:54:24,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:54:24,979 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:54:24,979 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:54:24,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (1/1) ... [2023-12-02 18:54:24,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:54:24,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:25,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:54:25,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:54:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:54:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:54:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:54:25,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:54:25,163 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:54:25,165 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:54:25,400 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:54:25,455 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:54:25,455 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:54:25,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:25 BoogieIcfgContainer [2023-12-02 18:54:25,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:54:25,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:54:25,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:54:25,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:54:25,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:54:24" (1/3) ... [2023-12-02 18:54:25,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566b1325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:25, skipping insertion in model container [2023-12-02 18:54:25,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:54:24" (2/3) ... [2023-12-02 18:54:25,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566b1325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:54:25, skipping insertion in model container [2023-12-02 18:54:25,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:25" (3/3) ... [2023-12-02 18:54:25,466 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b06.c [2023-12-02 18:54:25,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:54:25,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:54:25,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:54:25,577 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;@38cae749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:54:25,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:54:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 18:54:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:54:25,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:25,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:54:25,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 18:54:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601895513] [2023-12-02 18:54:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:25,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:25,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:54:25,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 18:54:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:25,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 18:54:25,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:26,067 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 18:54:26,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:26,069 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601895513] [2023-12-02 18:54:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601895513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:26,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:26,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:54:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281666125] [2023-12-02 18:54:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:26,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:54:26,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:54:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:54:26,102 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:54:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:26,168 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 18:54:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-12-02 18:54:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:26,177 INFO L225 Difference]: With dead ends: 16 [2023-12-02 18:54:26,177 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 18:54:26,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:26,183 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:26,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:54:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 18:54:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 18:54:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 18:54:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 18:54:26,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 18:54:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:26,212 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 18:54:26,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 18:54:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 18:54:26,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:54:26,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:26,213 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 18:54:26,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:54:26,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:26,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:26,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 18:54:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713187139] [2023-12-02 18:54:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:26,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:26,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:26,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:54:26,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 18:54:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:26,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-02 18:54:26,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:27,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:29,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713187139] [2023-12-02 18:54:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713187139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [544397913] [2023-12-02 18:54:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:29,385 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:29,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:29,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:29,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 18:54:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:29,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-02 18:54:29,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:30,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [544397913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046030530] [2023-12-02 18:54:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:31,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:31,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:31,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:54:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:31,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 18:54:31,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:31,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046030530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:32,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:32,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4, 4, 5, 5] total 14 [2023-12-02 18:54:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338707280] [2023-12-02 18:54:32,818 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:54:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:54:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:54:32,821 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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 18:54:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:33,107 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 18:54:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:54:33,108 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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 7 [2023-12-02 18:54:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:33,108 INFO L225 Difference]: With dead ends: 14 [2023-12-02 18:54:33,109 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 18:54:33,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-02 18:54:33,111 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:33,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:54:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 18:54:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 18:54:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 18:54:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 18:54:33,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 18:54:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:33,117 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 18:54:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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 18:54:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 18:54:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 18:54:33,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:33,118 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 18:54:33,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 18:54:33,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 18:54:33,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:54:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:33,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 18:54:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423486169] [2023-12-02 18:54:33,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:33,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:54:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 18:54:33,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:33,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:33,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 18:54:33,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:34,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:36,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:36,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423486169] [2023-12-02 18:54:36,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423486169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:36,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [438768189] [2023-12-02 18:54:36,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:36,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:36,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:36,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:36,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 18:54:36,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:36,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:36,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-02 18:54:36,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:37,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:38,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [438768189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254266459] [2023-12-02 18:54:38,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:38,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:38,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:38,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:38,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:54:38,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:38,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:38,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-02 18:54:38,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:38,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254266459] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:40,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 5] total 19 [2023-12-02 18:54:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523872231] [2023-12-02 18:54:40,340 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 18:54:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 18:54:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:54:40,342 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 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 18:54:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:40,676 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-02 18:54:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:54:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 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 10 [2023-12-02 18:54:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:40,677 INFO L225 Difference]: With dead ends: 17 [2023-12-02 18:54:40,677 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 18:54:40,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2023-12-02 18:54:40,678 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:40,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 16 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:54:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 18:54:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-02 18:54:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 18:54:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-02 18:54:40,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-02 18:54:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:40,690 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-02 18:54:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 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 18:54:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-02 18:54:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:54:40,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:40,691 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-02 18:54:40,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 18:54:40,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 18:54:41,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:54:41,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:41,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:54:41,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-02 18:54:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322489967] [2023-12-02 18:54:41,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:54:41,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:41,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:54:41,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 18:54:41,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:54:41,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:41,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 18:54:41,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:41,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:42,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:42,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322489967] [2023-12-02 18:54:42,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322489967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:42,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1869683323] [2023-12-02 18:54:42,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:54:42,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:42,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:42,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 18:54:42,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:54:42,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:42,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 18:54:42,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:43,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:43,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1869683323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:43,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481484359] [2023-12-02 18:54:43,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:54:43,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:43,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:43,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:54:43,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:54:43,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:43,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 18:54:43,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:44,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:54:44,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481484359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:44,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:44,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2023-12-02 18:54:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449291946] [2023-12-02 18:54:44,634 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:44,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:54:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:54:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:54:44,636 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 18:54:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:44,725 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 18:54:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 13 [2023-12-02 18:54:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:44,727 INFO L225 Difference]: With dead ends: 14 [2023-12-02 18:54:44,727 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:54:44,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:54:44,728 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:44,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:54:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:54:44,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:54:44,729 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 18:54:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:54:44,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-12-02 18:54:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:54:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 18:54:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:54:44,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:54:44,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:54:44,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 18:54:44,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:54:45,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 18:54:45,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:45,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 18:54:45,426 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 18:54:45,426 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-02 18:54:45,426 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-12-02 18:54:45,426 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-12-02 18:54:45,427 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 18:54:45,427 INFO L895 garLoopResultBuilder]: At program point L61-2(lines 61 146) the Hoare annotation is: (and (= (_ bv1 8) |ULTIMATE.start_main_~var_22~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= |ULTIMATE.start_main_~var_5~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_39~0#1|) (or (= (_ bv1 8) |ULTIMATE.start_main_~state_13~0#1|) (= (_ bv0 8) |ULTIMATE.start_main_~state_13~0#1|)) (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_11~0#1|) (= (_ bv2 32) |ULTIMATE.start_main_~var_17~0#1|) (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 8)) (or (and (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~state_6~0#1| (_ bv0 8))) (and (= (_ bv1 8) |ULTIMATE.start_main_~state_6~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~state_8~0#1|)))) [2023-12-02 18:54:45,427 INFO L899 garLoopResultBuilder]: For program point L61-3(lines 61 146) no Hoare annotation was computed. [2023-12-02 18:54:45,427 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-02 18:54:45,430 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-02 18:54:45,432 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:54:45,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:54:45 BoogieIcfgContainer [2023-12-02 18:54:45,440 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:54:45,440 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:54:45,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:54:45,440 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:54:45,441 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:54:25" (3/4) ... [2023-12-02 18:54:45,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:54:45,452 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-12-02 18:54:45,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 18:54:45,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 18:54:45,454 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:54:45,454 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:54:45,557 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:54:45,557 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:54:45,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:54:45,558 INFO L158 Benchmark]: Toolchain (without parser) took 20989.56ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 104.2MB in the beginning and 226.5MB in the end (delta: -122.2MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,559 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:45,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.67ms. Allocated memory is still 127.9MB. Free memory was 103.8MB in the beginning and 90.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.10ms. Allocated memory is still 127.9MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,560 INFO L158 Benchmark]: Boogie Preprocessor took 39.85ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,560 INFO L158 Benchmark]: RCFGBuilder took 477.95ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 67.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,561 INFO L158 Benchmark]: TraceAbstraction took 19979.57ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 67.0MB in the beginning and 232.8MB in the end (delta: -165.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:54:45,561 INFO L158 Benchmark]: Witness Printer took 117.52ms. Allocated memory is still 287.3MB. Free memory was 232.8MB in the beginning and 226.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:54:45,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.67ms. Allocated memory is still 127.9MB. Free memory was 103.8MB in the beginning and 90.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.10ms. Allocated memory is still 127.9MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.85ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 477.95ms. Allocated memory is still 127.9MB. Free memory was 86.3MB in the beginning and 67.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 19979.57ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 67.0MB in the beginning and 232.8MB in the end (delta: -165.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 117.52ms. Allocated memory is still 287.3MB. Free memory was 232.8MB in the beginning and 226.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: 21]: 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, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.9s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 6 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 44 HoareAnnotationTreeSize, 1 FomulaSimplifications, 107 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 165 ConstructedInterpolants, 67 QuantifiedInterpolants, 15804 SizeOfPredicates, 567 NumberOfNonLiveVariables, 1460 ConjunctsInSsa, 554 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 54/144 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: 61]: Loop Invariant Derived loop invariant: (((((((((1 == var_22) && (1 == mask_SORT_1)) && (var_5 == 0)) && (1 == var_39)) && ((1 == state_13) || (0 == state_13))) && (3 == mask_SORT_11)) && (2 == var_17)) && (var_12 == 0)) && (((state_8 == 0) && (state_6 == 0)) || ((1 == state_6) && (1 == state_8)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 18:54:45,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d21ebe8-74d7-4291-9833-7fe585156a1a/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