./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6d1133c9c30821e735c948d3959f88a96057a51cd0531437d4f6aabe9fe7ffd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:23:11,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:23:11,204 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:23:11,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:23:11,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:23:11,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:23:11,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:23:11,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:23:11,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:23:11,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:23:11,243 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:23:11,243 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:23:11,244 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:23:11,245 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:23:11,245 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:23:11,246 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:23:11,246 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:23:11,247 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:23:11,247 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:23:11,248 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:23:11,249 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:23:11,252 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:23:11,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:23:11,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:23:11,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:23:11,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:23:11,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:23:11,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:23:11,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:23:11,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:23:11,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:23:11,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:23:11,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:23:11,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:23:11,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:23:11,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:23:11,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:23:11,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:11,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:23:11,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:23:11,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:23:11,260 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:23:11,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:23:11,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:23:11,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:23:11,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:23:11,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:23:11,261 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6d1133c9c30821e735c948d3959f88a96057a51cd0531437d4f6aabe9fe7ffd [2023-12-02 15:23:11,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:23:11,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:23:11,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:23:11,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:23:11,519 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:23:11,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:14,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:23:14,955 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:23:14,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:14,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/8dd6121a0/eaa9dceeab0c4ab4bc390a89a9b335fc/FLAGf0a91ecbb [2023-12-02 15:23:14,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/8dd6121a0/eaa9dceeab0c4ab4bc390a89a9b335fc [2023-12-02 15:23:14,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:23:14,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:23:14,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:14,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:23:14,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:23:14,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:14" (1/1) ... [2023-12-02 15:23:14,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b66ea70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:14, skipping insertion in model container [2023-12-02 15:23:14,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:14" (1/1) ... [2023-12-02 15:23:15,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:23:15,203 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i[916,929] [2023-12-02 15:23:15,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:15,283 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:23:15,298 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i[916,929] [2023-12-02 15:23:15,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:15,367 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:23:15,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15 WrapperNode [2023-12-02 15:23:15,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:15,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:15,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:23:15,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:23:15,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,443 INFO L138 Inliner]: procedures = 29, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 413 [2023-12-02 15:23:15,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:15,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:23:15,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:23:15,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:23:15,456 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:23:15,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:23:15,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:23:15,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:23:15,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (1/1) ... [2023-12-02 15:23:15,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:15,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:23:15,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:23:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:23:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 15:23:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:23:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 15:23:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:23:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 15:23:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:23:15,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:23:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:23:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:23:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:23:15,721 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:23:15,724 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:23:16,221 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:23:16,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:23:16,817 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:23:16,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:16 BoogieIcfgContainer [2023-12-02 15:23:16,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:23:16,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:23:16,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:23:16,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:23:16,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:23:14" (1/3) ... [2023-12-02 15:23:16,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba61f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:16, skipping insertion in model container [2023-12-02 15:23:16,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:15" (2/3) ... [2023-12-02 15:23:16,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba61f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:16, skipping insertion in model container [2023-12-02 15:23:16,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:16" (3/3) ... [2023-12-02 15:23:16,831 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:16,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:23:16,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:23:16,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:23:16,923 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;@22090ca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:23:16,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:23:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:23:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:23:16,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:16,943 INFO L195 NwaCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:16,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:16,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash 989286416, now seen corresponding path program 1 times [2023-12-02 15:23:16,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:16,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002373865] [2023-12-02 15:23:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:16,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:17,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:23:17,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053738007] [2023-12-02 15:23:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:17,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:17,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:17,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:23:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:23:18,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:23:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:23:19,479 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:23:19,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:23:19,484 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:23:19,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:23:19,693 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:23:19,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:23:19,738 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 15:23:19,739 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 15:23:19,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 15:23:19,740 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 15:23:19,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 15:23:19,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 15:23:19,741 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 15:23:19,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 15:23:19,742 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 15:23:19,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 15:23:19,743 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-12-02 15:23:19,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated [2023-12-02 15:23:19,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 15:23:19,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 15:23:19,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-12-02 15:23:19,745 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated [2023-12-02 15:23:19,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 15:23:19,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 15:23:19,746 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem48 could not be translated [2023-12-02 15:23:19,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem48 could not be translated [2023-12-02 15:23:19,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 15:23:19,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 15:23:19,747 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 15:23:19,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated [2023-12-02 15:23:19,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated [2023-12-02 15:23:19,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 15:23:19,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated [2023-12-02 15:23:19,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 15:23:19,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated [2023-12-02 15:23:19,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated [2023-12-02 15:23:19,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 15:23:19,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 15:23:19,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 15:23:19,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated [2023-12-02 15:23:19,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 15:23:19,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 15:23:19,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 15:23:19,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 15:23:19,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 15:23:19,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 15:23:19,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated [2023-12-02 15:23:19,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 15:23:19,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 15:23:19,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated [2023-12-02 15:23:19,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 15:23:19,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 15:23:19,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 15:23:19,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 15:23:19,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 15:23:19,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 15:23:19,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 15:23:19,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 15:23:19,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 15:23:19,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 15:23:19,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 15:23:19,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 15:23:19,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 15:23:19,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated [2023-12-02 15:23:19,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 15:23:19,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 15:23:19,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 15:23:19,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated [2023-12-02 15:23:19,759 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 15:23:19,759 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 15:23:19,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 15:23:19,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 15:23:19,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:23:19 BoogieIcfgContainer [2023-12-02 15:23:19,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:23:19,785 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:23:19,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:23:19,786 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:23:19,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:16" (3/4) ... [2023-12-02 15:23:19,789 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:23:19,790 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:23:19,792 INFO L158 Benchmark]: Toolchain (without parser) took 4808.64ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 127.5MB in the beginning and 168.6MB in the end (delta: -41.2MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-12-02 15:23:19,792 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:23:19,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.73ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 111.5MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:23:19,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.37ms. Allocated memory is still 176.2MB. Free memory was 111.5MB in the beginning and 107.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:23:19,794 INFO L158 Benchmark]: Boogie Preprocessor took 66.73ms. Allocated memory is still 176.2MB. Free memory was 107.7MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:23:19,794 INFO L158 Benchmark]: RCFGBuilder took 1307.74ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 104.4MB in the beginning and 154.1MB in the end (delta: -49.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-12-02 15:23:19,795 INFO L158 Benchmark]: TraceAbstraction took 2961.33ms. Allocated memory is still 260.0MB. Free memory was 153.2MB in the beginning and 169.7MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:23:19,796 INFO L158 Benchmark]: Witness Printer took 5.10ms. Allocated memory is still 260.0MB. Free memory was 169.7MB in the beginning and 168.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:23:19,799 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory is still 45.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.73ms. Allocated memory is still 176.2MB. Free memory was 127.5MB in the beginning and 111.5MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.37ms. Allocated memory is still 176.2MB. Free memory was 111.5MB in the beginning and 107.7MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.73ms. Allocated memory is still 176.2MB. Free memory was 107.7MB in the beginning and 104.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1307.74ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 104.4MB in the beginning and 154.1MB in the end (delta: -49.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2961.33ms. Allocated memory is still 260.0MB. Free memory was 153.2MB in the beginning and 169.7MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.10ms. Allocated memory is still 260.0MB. Free memory was 169.7MB in the beginning and 168.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem42 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 19]: 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 someBinaryFLOATComparisonOperation at line 66, overapproximation of someBinaryDOUBLEComparisonOperation at line 64. Possible FailurePath: [L38] unsigned char isInitial = 0; [L39-L54] struct WrapperStruct00 WrapperStruct00 = { 1, 4, 256, 0, 1, 1000000.8, 3.8, 25, 2.75, 0, 32, 2, 2, -32 }; [L55] signed char last_1_WrapperStruct00_var_1_9 = 25; [L126] isInitial = 1 [L127] FCALL initially() [L128] COND TRUE 1 [L129] CALL updateLastVariables() [L119] EXPR WrapperStruct00.var_1_9 [L119] last_1_WrapperStruct00_var_1_9 = WrapperStruct00.var_1_9 [L129] RET updateLastVariables() [L130] CALL updateVariables() [L86] WrapperStruct00.var_1_3 = __VERIFIER_nondet_short() [L87] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L87] CALL assume_abort_if_not(WrapperStruct00.var_1_3 >= -32768) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(WrapperStruct00.var_1_3 >= -32768) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L88] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L88] CALL assume_abort_if_not(WrapperStruct00.var_1_3 <= 32767) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(WrapperStruct00.var_1_3 <= 32767) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L89] EXPR WrapperStruct00.var_1_3 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L89] CALL assume_abort_if_not(WrapperStruct00.var_1_3 != 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(WrapperStruct00.var_1_3 != 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L90] WrapperStruct00.var_1_4 = __VERIFIER_nondet_short() [L91] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L91] CALL assume_abort_if_not(WrapperStruct00.var_1_4 >= -32768) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(WrapperStruct00.var_1_4 >= -32768) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L92] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L92] CALL assume_abort_if_not(WrapperStruct00.var_1_4 <= 32767) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(WrapperStruct00.var_1_4 <= 32767) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L93] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L93] CALL assume_abort_if_not(WrapperStruct00.var_1_4 != 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(WrapperStruct00.var_1_4 != 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L94] WrapperStruct00.var_1_5 = __VERIFIER_nondet_uchar() [L95] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L95] CALL assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L96] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L96] CALL assume_abort_if_not(WrapperStruct00.var_1_5 <= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(WrapperStruct00.var_1_5 <= 1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L97] WrapperStruct00.var_1_6 = __VERIFIER_nondet_uchar() [L98] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L98] CALL assume_abort_if_not(WrapperStruct00.var_1_6 >= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(WrapperStruct00.var_1_6 >= 1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L99] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L99] CALL assume_abort_if_not(WrapperStruct00.var_1_6 <= 1) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(WrapperStruct00.var_1_6 <= 1) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L100] WrapperStruct00.var_1_8 = __VERIFIER_nondet_float() [L101] EXPR WrapperStruct00.var_1_8 [L101] EXPR WrapperStruct00.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F [L101] EXPR WrapperStruct00.var_1_8 [L101] EXPR WrapperStruct00.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F [L101] EXPR (WrapperStruct00.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L101] CALL assume_abort_if_not((WrapperStruct00.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not((WrapperStruct00.var_1_8 >= -922337.2036854765600e+13F && WrapperStruct00.var_1_8 <= -1.0e-20F) || (WrapperStruct00.var_1_8 <= 9223372.036854765600e+12F && WrapperStruct00.var_1_8 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L102] WrapperStruct00.var_1_10 = __VERIFIER_nondet_float() [L103] EXPR WrapperStruct00.var_1_10 [L103] EXPR WrapperStruct00.var_1_10 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_10 <= -1.0e-20F [L103] EXPR WrapperStruct00.var_1_10 [L103] EXPR WrapperStruct00.var_1_10 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_10 <= -1.0e-20F [L103] EXPR (WrapperStruct00.var_1_10 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_10 <= -1.0e-20F) || (WrapperStruct00.var_1_10 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_10 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L103] CALL assume_abort_if_not((WrapperStruct00.var_1_10 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_10 <= -1.0e-20F) || (WrapperStruct00.var_1_10 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_10 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not((WrapperStruct00.var_1_10 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_10 <= -1.0e-20F) || (WrapperStruct00.var_1_10 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_10 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L104] EXPR WrapperStruct00.var_1_10 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L104] CALL assume_abort_if_not(WrapperStruct00.var_1_10 != 0.0F) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(WrapperStruct00.var_1_10 != 0.0F) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L105] WrapperStruct00.var_1_11 = __VERIFIER_nondet_char() [L106] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L106] CALL assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L106] RET assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L107] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L107] CALL assume_abort_if_not(WrapperStruct00.var_1_11 <= 63) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(WrapperStruct00.var_1_11 <= 63) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L108] WrapperStruct00.var_1_12 = __VERIFIER_nondet_char() [L109] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L109] CALL assume_abort_if_not(WrapperStruct00.var_1_12 >= 31) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not(WrapperStruct00.var_1_12 >= 31) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L110] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L110] CALL assume_abort_if_not(WrapperStruct00.var_1_12 <= 63) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L110] RET assume_abort_if_not(WrapperStruct00.var_1_12 <= 63) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L111] WrapperStruct00.var_1_13 = __VERIFIER_nondet_char() [L112] EXPR WrapperStruct00.var_1_13 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L112] CALL assume_abort_if_not(WrapperStruct00.var_1_13 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L112] RET assume_abort_if_not(WrapperStruct00.var_1_13 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L113] EXPR WrapperStruct00.var_1_13 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L113] CALL assume_abort_if_not(WrapperStruct00.var_1_13 <= 31) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(WrapperStruct00.var_1_13 <= 31) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L114] WrapperStruct00.var_1_14 = __VERIFIER_nondet_char() [L115] EXPR WrapperStruct00.var_1_14 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L115] CALL assume_abort_if_not(WrapperStruct00.var_1_14 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L115] RET assume_abort_if_not(WrapperStruct00.var_1_14 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L116] EXPR WrapperStruct00.var_1_14 VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L116] CALL assume_abort_if_not(WrapperStruct00.var_1_14 <= 126) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L20] COND FALSE !(!cond) [L116] RET assume_abort_if_not(WrapperStruct00.var_1_14 <= 126) VAL [WrapperStruct00={4:0}, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L130] RET updateVariables() [L131] CALL step() [L59] EXPR WrapperStruct00.var_1_3 [L59] EXPR WrapperStruct00.var_1_4 [L59] EXPR ((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4) [L59] EXPR WrapperStruct00.var_1_4 [L59] EXPR ((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4) [L59] COND FALSE !((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) [L62] EXPR WrapperStruct00.var_1_8 [L62] WrapperStruct00.var_1_7 = WrapperStruct00.var_1_8 [L63] EXPR WrapperStruct00.var_1_11 [L63] signed char stepLocal_2 = WrapperStruct00.var_1_11; [L64] EXPR WrapperStruct00.var_1_10 [L64] unsigned char stepLocal_1 = 99999.375 <= WrapperStruct00.var_1_10; [L65] EXPR WrapperStruct00.var_1_13 [L65] COND TRUE WrapperStruct00.var_1_13 <= stepLocal_2 [L66] EXPR WrapperStruct00.var_1_8 [L66] EXPR WrapperStruct00.var_1_7 [L66] COND TRUE (WrapperStruct00.var_1_8 < WrapperStruct00.var_1_7) && stepLocal_1 [L67] EXPR WrapperStruct00.var_1_13 [L67] EXPR WrapperStruct00.var_1_14 [L67] WrapperStruct00.var_1_15 = (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_14) [L72] EXPR WrapperStruct00.var_1_6 [L72] unsigned char stepLocal_0 = WrapperStruct00.var_1_6; [L73] EXPR WrapperStruct00.var_1_8 [L73] EXPR WrapperStruct00.var_1_7 [L73] EXPR WrapperStruct00.var_1_10 [L73] COND FALSE !(WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) [L131] RET step() [L132] CALL, EXPR property() [L122] EXPR WrapperStruct00.var_1_3 [L122] EXPR WrapperStruct00.var_1_4 [L122] EXPR ((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4) [L122] EXPR WrapperStruct00.var_1_4 [L122] EXPR ((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4) [L122] EXPR ((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1 [L122] EXPR (((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8)) [L122] EXPR WrapperStruct00.var_1_7 [L122] EXPR WrapperStruct00.var_1_8 [L122] EXPR (((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8)) [L122] EXPR ((((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8))) && ((WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1) [L122] EXPR WrapperStruct00.var_1_8 [L122] EXPR WrapperStruct00.var_1_7 [L122] EXPR WrapperStruct00.var_1_10 [L122] EXPR (WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1 [L122] EXPR WrapperStruct00.var_1_1 [L122] EXPR WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6 [L122] EXPR (WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12))) [L122] EXPR WrapperStruct00.var_1_9 [L122] EXPR WrapperStruct00.var_1_11 [L122] EXPR ((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5) [L122] EXPR WrapperStruct00.var_1_11 [L122] EXPR ((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5) [L122] EXPR WrapperStruct00.var_1_12 [L122] EXPR WrapperStruct00.var_1_13 [L122] EXPR WrapperStruct00.var_1_14 [L122] EXPR (WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12))) [L122] EXPR (WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1 [L122] EXPR ((((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8))) && ((WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1) [L122] EXPR (((((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8))) && ((WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1)) && ((WrapperStruct00.var_1_13 <= WrapperStruct00.var_1_11) ? (((WrapperStruct00.var_1_8 < WrapperStruct00.var_1_7) && (99999.375 <= WrapperStruct00.var_1_10)) ? (WrapperStruct00.var_1_15 == ((signed short int) (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_14))) : 1) : (WrapperStruct00.var_1_15 == ((signed short int) -25))) [L122-L123] return (((((last_1_WrapperStruct00_var_1_9 % ((((WrapperStruct00.var_1_3) > (WrapperStruct00.var_1_4)) ? (WrapperStruct00.var_1_3) : (WrapperStruct00.var_1_4)))) <= -1000000) ? (WrapperStruct00.var_1_1 == ((unsigned char) (WrapperStruct00.var_1_5 || WrapperStruct00.var_1_6))) : 1) && (WrapperStruct00.var_1_7 == ((float) WrapperStruct00.var_1_8))) && ((WrapperStruct00.var_1_8 < (WrapperStruct00.var_1_7 / WrapperStruct00.var_1_10)) ? ((WrapperStruct00.var_1_1 || WrapperStruct00.var_1_6) ? (WrapperStruct00.var_1_9 == ((signed char) ((((((WrapperStruct00.var_1_11) > (5)) ? (WrapperStruct00.var_1_11) : (5))) + (WrapperStruct00.var_1_12 - WrapperStruct00.var_1_13)) - WrapperStruct00.var_1_14))) : ((WrapperStruct00.var_1_10 > WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_11)) : (WrapperStruct00.var_1_9 == ((signed char) WrapperStruct00.var_1_12)))) : 1)) && ((WrapperStruct00.var_1_13 <= WrapperStruct00.var_1_11) ? (((WrapperStruct00.var_1_8 < WrapperStruct00.var_1_7) && (99999.375 <= WrapperStruct00.var_1_10)) ? (WrapperStruct00.var_1_15 == ((signed short int) (WrapperStruct00.var_1_13 + WrapperStruct00.var_1_14))) : 1) : (WrapperStruct00.var_1_15 == ((signed short int) -25))) ; [L132] RET, EXPR property() [L132] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, \old(cond)=0, cond=0, isInitial=1, last_1_WrapperStruct00_var_1_9=25] [L19] reach_error() VAL [WrapperStruct00={4:0}, \old(cond)=0, cond=0, isInitial=1, last_1_WrapperStruct00_var_1_9=25] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 21, 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=51occurred 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: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 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 15:23:19,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6d1133c9c30821e735c948d3959f88a96057a51cd0531437d4f6aabe9fe7ffd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:23:22,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:23:22,173 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:23:22,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:23:22,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:23:22,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:23:22,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:23:22,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:23:22,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:23:22,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:23:22,220 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:23:22,220 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:23:22,221 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:23:22,222 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:23:22,222 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:23:22,223 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:23:22,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:23:22,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:23:22,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:23:22,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:23:22,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:23:22,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:23:22,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:23:22,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:23:22,229 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:23:22,230 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:23:22,230 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:23:22,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:23:22,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:23:22,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:23:22,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:23:22,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:23:22,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:23:22,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:23:22,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:22,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:23:22,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:23:22,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:23:22,235 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:23:22,235 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:22,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:23:22,236 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:23:22,236 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:23:22,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:23:22,237 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6d1133c9c30821e735c948d3959f88a96057a51cd0531437d4f6aabe9fe7ffd [2023-12-02 15:23:22,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:23:22,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:23:22,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:23:22,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:23:22,623 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:23:22,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:25,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:23:26,119 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:23:26,119 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:26,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/20284873c/4d9e155d343149f1bf4cbfa1ae0f41a9/FLAG459980aa2 [2023-12-02 15:23:26,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/data/20284873c/4d9e155d343149f1bf4cbfa1ae0f41a9 [2023-12-02 15:23:26,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:23:26,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:23:26,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:26,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:23:26,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:23:26,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429dd404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26, skipping insertion in model container [2023-12-02 15:23:26,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:23:26,377 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i[916,929] [2023-12-02 15:23:26,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:26,468 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:23:26,481 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_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-16.i[916,929] [2023-12-02 15:23:26,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:26,562 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:23:26,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26 WrapperNode [2023-12-02 15:23:26,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:26,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:26,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:23:26,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:23:26,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,651 INFO L138 Inliner]: procedures = 33, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 407 [2023-12-02 15:23:26,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:26,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:23:26,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:23:26,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:23:26,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:23:26,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:23:26,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:23:26,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:23:26,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (1/1) ... [2023-12-02 15:23:26,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:26,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:23:26,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:23:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:23:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:23:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-12-02 15:23:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:23:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 15:23:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-12-02 15:23:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 15:23:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 15:23:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:23:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:23:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:23:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:23:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 15:23:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-12-02 15:23:26,963 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:23:26,965 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:23:32,363 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:23:32,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:23:32,407 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:23:32,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:32 BoogieIcfgContainer [2023-12-02 15:23:32,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:23:32,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:23:32,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:23:32,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:23:32,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:23:26" (1/3) ... [2023-12-02 15:23:32,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4182b612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:32, skipping insertion in model container [2023-12-02 15:23:32,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:26" (2/3) ... [2023-12-02 15:23:32,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4182b612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:32, skipping insertion in model container [2023-12-02 15:23:32,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:32" (3/3) ... [2023-12-02 15:23:32,419 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-16.i [2023-12-02 15:23:32,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:23:32,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:23:32,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:23:32,496 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;@479d6d83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:23:32,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:23:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:23:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 15:23:32,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:32,518 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:32,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:32,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2122180391, now seen corresponding path program 1 times [2023-12-02 15:23:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256072864] [2023-12-02 15:23:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:32,542 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 15:23:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:32,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:32,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:33,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:23:33,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2023-12-02 15:23:33,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:33,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256072864] [2023-12-02 15:23:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256072864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:23:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265392066] [2023-12-02 15:23:33,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:23:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:23:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:23:33,323 INFO L87 Difference]: Start difference. First operand has 103 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 80 states have internal predecessors, (113), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:23:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:33,386 INFO L93 Difference]: Finished difference Result 199 states and 323 transitions. [2023-12-02 15:23:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:23:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-02 15:23:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:33,400 INFO L225 Difference]: With dead ends: 199 [2023-12-02 15:23:33,400 INFO L226 Difference]: Without dead ends: 97 [2023-12-02 15:23:33,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:23:33,410 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:33,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:23:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-02 15:23:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-02 15:23:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:23:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2023-12-02 15:23:33,483 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 152 [2023-12-02 15:23:33,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:33,483 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2023-12-02 15:23:33,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:23:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2023-12-02 15:23:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 15:23:33,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:33,489 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:33,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:33,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:33,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:23:33,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1006512639, now seen corresponding path program 1 times [2023-12-02 15:23:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144597975] [2023-12-02 15:23:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:33,694 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 15:23:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:33,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:33,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:23:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:34,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 15:23:34,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:34,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:23:35,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:23:35,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:23:35,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:23:36,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:23:36,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:23:36,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 67 [2023-12-02 15:23:36,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:36,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 68 [2023-12-02 15:23:37,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:37,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 81 [2023-12-02 15:23:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-02 15:23:37,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:37,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144597975] [2023-12-02 15:23:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144597975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:23:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981130319] [2023-12-02 15:23:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:37,541 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:23:37,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:23:37,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 15:23:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:40,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 15:23:40,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:41,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:23:42,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-02 15:23:43,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:43,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 71 [2023-12-02 15:23:44,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:44,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2023-12-02 15:23:45,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:45,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 93 [2023-12-02 15:23:46,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:46,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 96 [2023-12-02 15:23:47,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:47,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 175 treesize of output 123 [2023-12-02 15:23:48,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:23:48,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 126 [2023-12-02 15:23:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-02 15:23:52,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1981130319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:52,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:23:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 25 [2023-12-02 15:23:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935425793] [2023-12-02 15:23:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:23:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:23:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2023-12-02 15:23:52,632 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-12-02 15:24:00,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:03,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:06,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:07,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:09,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:14,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:16,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:19,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:21,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:24,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:24:25,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:24:27,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:24:29,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:31,316 INFO L93 Difference]: Finished difference Result 455 states and 652 transitions. [2023-12-02 15:24:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:24:31,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 152 [2023-12-02 15:24:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:31,323 INFO L225 Difference]: With dead ends: 455 [2023-12-02 15:24:31,323 INFO L226 Difference]: Without dead ends: 359 [2023-12-02 15:24:31,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2023-12-02 15:24:31,327 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 528 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 96 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:31,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 839 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2009 Invalid, 2 Unknown, 0 Unchecked, 38.0s Time] [2023-12-02 15:24:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-02 15:24:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 342. [2023-12-02 15:24:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 261 states have (on average 1.3333333333333333) internal successors, (348), 264 states have internal predecessors, (348), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 15:24:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 492 transitions. [2023-12-02 15:24:31,404 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 492 transitions. Word has length 152 [2023-12-02 15:24:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:31,405 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 492 transitions. [2023-12-02 15:24:31,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-12-02 15:24:31,406 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 492 transitions. [2023-12-02 15:24:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 15:24:31,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:31,412 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:31,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 15:24:31,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:31,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:31,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2064350717, now seen corresponding path program 1 times [2023-12-02 15:24:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:24:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604250685] [2023-12-02 15:24:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:31,816 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 15:24:31,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:24:31,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:31,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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)] Waiting until timeout for monitored process [2023-12-02 15:24:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:32,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:24:32,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-02 15:24:32,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:32,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:24:32,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604250685] [2023-12-02 15:24:32,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604250685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:32,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:32,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:24:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227149365] [2023-12-02 15:24:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:24:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:24:32,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:24:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:24:32,363 INFO L87 Difference]: Start difference. First operand 342 states and 492 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:24:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:32,476 INFO L93 Difference]: Finished difference Result 693 states and 998 transitions. [2023-12-02 15:24:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:24:32,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-02 15:24:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:32,483 INFO L225 Difference]: With dead ends: 693 [2023-12-02 15:24:32,483 INFO L226 Difference]: Without dead ends: 352 [2023-12-02 15:24:32,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 15:24:32,486 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 7 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:32,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 411 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:24:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-02 15:24:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 344. [2023-12-02 15:24:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 263 states have (on average 1.326996197718631) internal successors, (349), 266 states have internal predecessors, (349), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 15:24:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 493 transitions. [2023-12-02 15:24:32,544 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 493 transitions. Word has length 152 [2023-12-02 15:24:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:32,545 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 493 transitions. [2023-12-02 15:24:32,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:24:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 493 transitions. [2023-12-02 15:24:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 15:24:32,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:32,549 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:32,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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)] Ended with exit code 0 [2023-12-02 15:24:32,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:32,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:32,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash 870550591, now seen corresponding path program 1 times [2023-12-02 15:24:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:24:32,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75207058] [2023-12-02 15:24:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:32,751 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 15:24:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:24:32,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:33,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:24:33,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-02 15:24:33,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:33,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:24:33,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75207058] [2023-12-02 15:24:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75207058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:24:33,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:24:33,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844812128] [2023-12-02 15:24:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:33,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:24:33,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:24:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:24:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:24:33,303 INFO L87 Difference]: Start difference. First operand 344 states and 493 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:24:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:33,411 INFO L93 Difference]: Finished difference Result 691 states and 991 transitions. [2023-12-02 15:24:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:24:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2023-12-02 15:24:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:33,415 INFO L225 Difference]: With dead ends: 691 [2023-12-02 15:24:33,416 INFO L226 Difference]: Without dead ends: 348 [2023-12-02 15:24:33,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 15:24:33,417 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 7 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:33,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 411 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:24:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-02 15:24:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2023-12-02 15:24:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 263 states have (on average 1.3231939163498099) internal successors, (348), 266 states have internal predecessors, (348), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 15:24:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 492 transitions. [2023-12-02 15:24:33,468 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 492 transitions. Word has length 152 [2023-12-02 15:24:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:33,468 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 492 transitions. [2023-12-02 15:24:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 15:24:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 492 transitions. [2023-12-02 15:24:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 15:24:33,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:33,472 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:33,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:24:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:33,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:33,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -380104508, now seen corresponding path program 1 times [2023-12-02 15:24:33,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:24:33,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344012771] [2023-12-02 15:24:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:33,676 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 15:24:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:24:33,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (7)] Waiting until timeout for monitored process [2023-12-02 15:24:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:34,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 15:24:34,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:34,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:24:35,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:35,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-02 15:24:35,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:35,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-02 15:24:35,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:35,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-02 15:24:36,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:36,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-02 15:24:36,674 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:36,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 93 [2023-12-02 15:24:36,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:36,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 66 [2023-12-02 15:24:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 144 proven. 440 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-02 15:24:36,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:24:37,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:24:37,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344012771] [2023-12-02 15:24:37,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344012771] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:37,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:37,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2023-12-02 15:24:37,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915075889] [2023-12-02 15:24:37,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:37,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:24:37,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:24:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:24:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:24:37,284 INFO L87 Difference]: Start difference. First operand 344 states and 492 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:24:39,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:24:41,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:24:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:42,060 INFO L93 Difference]: Finished difference Result 720 states and 1023 transitions. [2023-12-02 15:24:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:24:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 153 [2023-12-02 15:24:42,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:42,065 INFO L225 Difference]: With dead ends: 720 [2023-12-02 15:24:42,065 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 15:24:42,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:24:42,067 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 78 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:42,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 318 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 15:24:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 15:24:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 260. [2023-12-02 15:24:42,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 188 states have (on average 1.25) internal successors, (235), 191 states have internal predecessors, (235), 62 states have call successors, (62), 9 states have call predecessors, (62), 9 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:24:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 359 transitions. [2023-12-02 15:24:42,109 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 359 transitions. Word has length 153 [2023-12-02 15:24:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:42,110 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 359 transitions. [2023-12-02 15:24:42,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:24:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 359 transitions. [2023-12-02 15:24:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 15:24:42,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:42,114 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:42,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (7)] Ended with exit code 0 [2023-12-02 15:24:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:42,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:24:42,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1659968186, now seen corresponding path program 1 times [2023-12-02 15:24:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:24:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093840684] [2023-12-02 15:24:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:42,317 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 15:24:42,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:24:42,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:24:42,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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)] Waiting until timeout for monitored process [2023-12-02 15:24:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:43,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 15:24:43,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:43,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:24:43,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:43,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:43,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:44,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:44,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:24:44,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 67 [2023-12-02 15:24:44,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:44,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 77 [2023-12-02 15:24:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-02 15:24:44,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:45,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:24:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093840684] [2023-12-02 15:24:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093840684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1415018335] [2023-12-02 15:24:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:24:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:24:45,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:24:45,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 15:24:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:48,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 15:24:48,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:48,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:24:49,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-02 15:24:51,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:51,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 71 [2023-12-02 15:24:52,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:52,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 82 [2023-12-02 15:24:53,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:53,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 93 [2023-12-02 15:24:54,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:54,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 104 [2023-12-02 15:24:55,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:55,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 134 [2023-12-02 15:25:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-02 15:25:00,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1415018335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:00,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:25:00,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [9] total 24 [2023-12-02 15:25:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086626301] [2023-12-02 15:25:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:00,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:25:00,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:25:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:25:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-12-02 15:25:00,619 INFO L87 Difference]: Start difference. First operand 260 states and 359 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 15:25:08,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:10,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:15,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:25:17,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:22,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:25:24,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:25:25,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:25:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:26,701 INFO L93 Difference]: Finished difference Result 633 states and 875 transitions. [2023-12-02 15:25:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:25:26,702 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 153 [2023-12-02 15:25:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:26,706 INFO L225 Difference]: With dead ends: 633 [2023-12-02 15:25:26,706 INFO L226 Difference]: Without dead ends: 394 [2023-12-02 15:25:26,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:25:26,709 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 432 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:26,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 611 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2023-12-02 15:25:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-12-02 15:25:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 264. [2023-12-02 15:25:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 191 states have (on average 1.2408376963350785) internal successors, (237), 194 states have internal predecessors, (237), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:25:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 361 transitions. [2023-12-02 15:25:26,759 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 361 transitions. Word has length 153 [2023-12-02 15:25:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:26,760 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 361 transitions. [2023-12-02 15:25:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 15:25:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 361 transitions. [2023-12-02 15:25:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:25:26,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:26,763 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:26,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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)] Ended with exit code 0 [2023-12-02 15:25:26,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 15:25:27,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:25:27,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:25:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1101395152, now seen corresponding path program 1 times [2023-12-02 15:25:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:25:27,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489329244] [2023-12-02 15:25:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:27,166 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 15:25:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:25:27,167 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:25:27,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (10)] Waiting until timeout for monitored process [2023-12-02 15:25:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:27,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 15:25:27,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:27,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 15:25:28,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 15:25:28,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 15:25:28,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 15:25:28,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2023-12-02 15:25:28,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-02 15:25:29,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:29,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 43 [2023-12-02 15:25:29,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:29,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 46 [2023-12-02 15:25:29,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:29,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 56 [2023-12-02 15:25:29,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:29,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 27 [2023-12-02 15:25:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 562 proven. 66 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-02 15:25:29,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 48 proven. 66 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-02 15:25:30,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:25:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489329244] [2023-12-02 15:25:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489329244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:25:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224302019] [2023-12-02 15:25:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:30,415 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:25:30,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:25:30,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:25:30,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 15:25:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:32,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 15:25:32,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:32,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:25:33,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:33,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2023-12-02 15:25:33,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:33,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-12-02 15:25:33,712 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:33,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2023-12-02 15:25:34,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:34,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2023-12-02 15:25:34,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:34,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2023-12-02 15:25:34,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:34,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53 [2023-12-02 15:25:35,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:35,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2023-12-02 15:25:35,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:35,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 67 [2023-12-02 15:25:36,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:36,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 75 [2023-12-02 15:25:37,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:37,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78 [2023-12-02 15:25:37,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:37,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 86 [2023-12-02 15:25:37,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:37,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 73 treesize of output 37 [2023-12-02 15:25:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-02 15:25:37,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [224302019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:25:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 8] total 28 [2023-12-02 15:25:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405566258] [2023-12-02 15:25:37,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:37,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:25:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:25:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:25:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2023-12-02 15:25:37,700 INFO L87 Difference]: Start difference. First operand 264 states and 361 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-12-02 15:25:40,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:42,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:44,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:45,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:25:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:46,798 INFO L93 Difference]: Finished difference Result 744 states and 1011 transitions. [2023-12-02 15:25:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:25:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 154 [2023-12-02 15:25:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:46,803 INFO L225 Difference]: With dead ends: 744 [2023-12-02 15:25:46,803 INFO L226 Difference]: Without dead ends: 501 [2023-12-02 15:25:46,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:25:46,805 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 485 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 100 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:46,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 312 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 278 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 15:25:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-02 15:25:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2023-12-02 15:25:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 364 states have (on average 1.2307692307692308) internal successors, (448), 369 states have internal predecessors, (448), 114 states have call successors, (114), 20 states have call predecessors, (114), 20 states have return successors, (114), 109 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-02 15:25:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 676 transitions. [2023-12-02 15:25:46,925 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 676 transitions. Word has length 154 [2023-12-02 15:25:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:46,926 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 676 transitions. [2023-12-02 15:25:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 6 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-12-02 15:25:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 676 transitions. [2023-12-02 15:25:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:25:46,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:46,928 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:46,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 15:25:47,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (10)] Ended with exit code 0 [2023-12-02 15:25:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:25:47,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:25:47,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1958381575, now seen corresponding path program 1 times [2023-12-02 15:25:47,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:25:47,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044287215] [2023-12-02 15:25:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:47,330 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 15:25:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:25:47,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:25:47,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (12)] Waiting until timeout for monitored process [2023-12-02 15:25:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:48,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 15:25:48,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:48,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:25:48,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:25:48,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-02 15:25:49,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:49,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-02 15:25:49,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:49,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 70 [2023-12-02 15:25:50,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:50,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 83 [2023-12-02 15:25:50,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:50,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 171 treesize of output 119 [2023-12-02 15:25:51,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:51,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 120 [2023-12-02 15:25:51,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:25:51,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 271 treesize of output 97 [2023-12-02 15:25:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 192 proven. 440 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-02 15:25:52,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:52,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:25:52,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044287215] [2023-12-02 15:25:52,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044287215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:25:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1511287263] [2023-12-02 15:25:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:52,319 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:25:52,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:25:52,320 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:25:52,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 15:25:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:55,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 15:25:55,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:55,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:25:56,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-02 15:26:00,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:00,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 69 [2023-12-02 15:26:01,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:01,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 80 [2023-12-02 15:26:02,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:02,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 91 [2023-12-02 15:26:04,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:04,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 134 treesize of output 94 [2023-12-02 15:26:05,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:05,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 173 treesize of output 121 [2023-12-02 15:26:05,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:26:05,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 170 treesize of output 124 [2023-12-02 15:27:36,860 WARN L293 SmtUtils]: Spent 15.54s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:28:39,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:28:39,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 289 treesize of output 129 [2023-12-02 15:28:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 601 proven. 27 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-02 15:28:56,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:29:50,794 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_~#WrapperStruct00~0.base|))) (let ((.cse1 (let ((.cse5 (select .cse3 (bvadd (_ bv7 32) |c_~#WrapperStruct00~0.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse0 (let ((.cse4 (select .cse3 (bvadd (_ bv11 32) |c_~#WrapperStruct00~0.offset|)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (fp.lt .cse0 (fp.div c_currentRoundingMode .cse1 (let ((.cse2 (select .cse3 (bvadd (_ bv16 32) |c_~#WrapperStruct00~0.offset|)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.eq .cse1 .cse0)))) is different from true [2023-12-02 15:30:00,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1511287263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:30:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262206157] [2023-12-02 15:30:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:00,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:30:00,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:30:00,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:30:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:00,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 15:30:00,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:10,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-02 15:30:10,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-02 15:30:11,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:11,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-02 15:30:11,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:11,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 60 [2023-12-02 15:30:12,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:12,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 70 [2023-12-02 15:30:15,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 106 [2023-12-02 15:30:17,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:17,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 107 [2023-12-02 15:30:19,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:19,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 261 treesize of output 93 [2023-12-02 15:30:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-02 15:30:19,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:30:19,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262206157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:30:19,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:30:19,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 24] total 42 [2023-12-02 15:30:19,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480663308] [2023-12-02 15:30:19,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:30:19,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:30:19,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:30:19,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:30:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1654, Unknown=7, NotChecked=86, Total=2070 [2023-12-02 15:30:19,837 INFO L87 Difference]: Start difference. First operand 499 states and 676 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-12-02 15:30:27,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:30,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:32,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:35,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:39,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:44,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:45,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:48,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:49,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:30:51,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:30:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:54,115 INFO L93 Difference]: Finished difference Result 1288 states and 1754 transitions. [2023-12-02 15:30:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:30:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 154 [2023-12-02 15:30:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:54,123 INFO L225 Difference]: With dead ends: 1288 [2023-12-02 15:30:54,123 INFO L226 Difference]: Without dead ends: 810 [2023-12-02 15:30:54,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 451 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 143.7s TimeCoverageRelationStatistics Valid=415, Invalid=2338, Unknown=7, NotChecked=102, Total=2862 [2023-12-02 15:30:54,127 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 643 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 117 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:54,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 754 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 815 Invalid, 2 Unknown, 0 Unchecked, 30.7s Time] [2023-12-02 15:30:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-12-02 15:30:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 563. [2023-12-02 15:30:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 422 states have (on average 1.2274881516587677) internal successors, (518), 425 states have internal predecessors, (518), 114 states have call successors, (114), 26 states have call predecessors, (114), 26 states have return successors, (114), 111 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-02 15:30:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 746 transitions. [2023-12-02 15:30:54,273 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 746 transitions. Word has length 154 [2023-12-02 15:30:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:54,273 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 746 transitions. [2023-12-02 15:30:54,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 5 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-12-02 15:30:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 746 transitions. [2023-12-02 15:30:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:30:54,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:54,275 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:30:54,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:30:54,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (12)] Ended with exit code 0 [2023-12-02 15:30:54,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 15:30:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:30:54,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:30:54,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1149034949, now seen corresponding path program 1 times [2023-12-02 15:30:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:30:54,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950768207] [2023-12-02 15:30:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:54,877 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 15:30:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:30:54,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:30:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (15)] Waiting until timeout for monitored process [2023-12-02 15:30:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:55,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:30:55,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:30:55,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:30:55,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:30:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950768207] [2023-12-02 15:30:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950768207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:30:55,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:30:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:30:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862053653] [2023-12-02 15:30:55,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:30:55,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:30:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:30:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:30:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:30:55,420 INFO L87 Difference]: Start difference. First operand 563 states and 746 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:30:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:55,679 INFO L93 Difference]: Finished difference Result 1101 states and 1455 transitions. [2023-12-02 15:30:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:30:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 154 [2023-12-02 15:30:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:55,684 INFO L225 Difference]: With dead ends: 1101 [2023-12-02 15:30:55,684 INFO L226 Difference]: Without dead ends: 559 [2023-12-02 15:30:55,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:30:55,687 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 30 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:55,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 361 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:30:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-12-02 15:30:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-12-02 15:30:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 418 states have (on average 1.2105263157894737) internal successors, (506), 421 states have internal predecessors, (506), 114 states have call successors, (114), 26 states have call predecessors, (114), 26 states have return successors, (114), 111 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-02 15:30:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 734 transitions. [2023-12-02 15:30:55,818 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 734 transitions. Word has length 154 [2023-12-02 15:30:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:55,819 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 734 transitions. [2023-12-02 15:30:55,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:30:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 734 transitions. [2023-12-02 15:30:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:30:55,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:55,821 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:30:55,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (15)] Ended with exit code 0 [2023-12-02 15:30:56,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:30:56,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:30:56,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1107363589, now seen corresponding path program 1 times [2023-12-02 15:30:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:30:56,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284670293] [2023-12-02 15:30:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:56,025 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 15:30:56,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:30:56,026 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:30:56,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (16)] Waiting until timeout for monitored process [2023-12-02 15:30:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:56,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 15:30:56,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:57,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 15:30:58,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-02 15:30:58,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-02 15:30:59,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-02 15:30:59,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-02 15:30:59,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:30:59,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 45 [2023-12-02 15:31:00,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:00,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 78 [2023-12-02 15:31:00,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:00,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 134 treesize of output 79 [2023-12-02 15:31:01,586 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:01,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 239 treesize of output 83 [2023-12-02 15:31:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 106 proven. 470 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-02 15:31:01,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:02,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:31:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284670293] [2023-12-02 15:31:02,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284670293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922090224] [2023-12-02 15:31:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:02,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:31:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:31:02,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:31:02,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 15:31:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:04,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-02 15:31:04,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:06,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 15:31:09,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-02 15:31:10,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:10,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 57 [2023-12-02 15:31:12,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:12,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 68 [2023-12-02 15:31:13,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:13,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 71 [2023-12-02 15:31:14,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:14,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 79 [2023-12-02 15:31:16,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:16,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 149 treesize of output 109 [2023-12-02 15:31:16,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:16,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 146 treesize of output 112 [2023-12-02 15:31:18,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:18,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 227 treesize of output 103 [2023-12-02 15:31:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 184 proven. 440 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-02 15:31:18,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1922090224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944620431] [2023-12-02 15:31:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:18,711 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:18,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:31:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:19,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 15:31:19,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:23,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-02 15:31:24,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-02 15:31:24,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-02 15:31:25,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:25,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 55 [2023-12-02 15:31:26,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:26,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 58 [2023-12-02 15:31:27,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:27,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 91 [2023-12-02 15:31:28,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:28,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 92 [2023-12-02 15:31:29,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:29,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 87 [2023-12-02 15:31:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 138 proven. 470 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 15:31:29,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944620431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:29,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:31:29,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 17] total 42 [2023-12-02 15:31:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241794236] [2023-12-02 15:31:29,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:31:29,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-02 15:31:29,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:31:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-02 15:31:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1714, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 15:31:29,732 INFO L87 Difference]: Start difference. First operand 559 states and 734 transitions. Second operand has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 13 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-02 15:31:57,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:31:59,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:01,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:03,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:06,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:10,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:12,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:14,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:16,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:24,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:32:27,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:32:29,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:32:33,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:36,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:41,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:44,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:46,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:49,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:51,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:32:59,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:01,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:04,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:11,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:33:13,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:33:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:13,481 INFO L93 Difference]: Finished difference Result 1868 states and 2461 transitions. [2023-12-02 15:33:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 15:33:13,482 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 13 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) Word has length 154 [2023-12-02 15:33:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:13,489 INFO L225 Difference]: With dead ends: 1868 [2023-12-02 15:33:13,489 INFO L226 Difference]: Without dead ends: 1330 [2023-12-02 15:33:13,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 474 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3934 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=2106, Invalid=10550, Unknown=0, NotChecked=0, Total=12656 [2023-12-02 15:33:13,496 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1755 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 3618 mSolverCounterSat, 686 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 3618 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:13,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 1007 Invalid, 4312 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [686 Valid, 3618 Invalid, 8 Unknown, 0 Unchecked, 83.9s Time] [2023-12-02 15:33:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2023-12-02 15:33:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 711. [2023-12-02 15:33:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 516 states have (on average 1.182170542635659) internal successors, (610), 523 states have internal predecessors, (610), 152 states have call successors, (152), 42 states have call predecessors, (152), 42 states have return successors, (152), 145 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-02 15:33:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 914 transitions. [2023-12-02 15:33:13,691 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 914 transitions. Word has length 154 [2023-12-02 15:33:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:13,692 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 914 transitions. [2023-12-02 15:33:13,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 13 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-02 15:33:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 914 transitions. [2023-12-02 15:33:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 15:33:13,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:13,695 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:13,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:33:13,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (16)] Ended with exit code 0 [2023-12-02 15:33:14,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 15:33:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:33:14,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1878097155, now seen corresponding path program 1 times [2023-12-02 15:33:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192338089] [2023-12-02 15:33:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:14,298 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 15:33:14,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:14,299 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:14,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (19)] Waiting until timeout for monitored process [2023-12-02 15:33:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:14,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:33:14,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-02 15:33:14,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:14,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192338089] [2023-12-02 15:33:14,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192338089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:14,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108659118] [2023-12-02 15:33:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:14,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:14,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:14,968 INFO L87 Difference]: Start difference. First operand 711 states and 914 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 15:33:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:16,174 INFO L93 Difference]: Finished difference Result 1325 states and 1683 transitions. [2023-12-02 15:33:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:33:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2023-12-02 15:33:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:16,179 INFO L225 Difference]: With dead ends: 1325 [2023-12-02 15:33:16,179 INFO L226 Difference]: Without dead ends: 623 [2023-12-02 15:33:16,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:33:16,182 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 7 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:16,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 492 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:33:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-02 15:33:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 609. [2023-12-02 15:33:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 438 states have (on average 1.1689497716894977) internal successors, (512), 445 states have internal predecessors, (512), 130 states have call successors, (130), 40 states have call predecessors, (130), 40 states have return successors, (130), 123 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-02 15:33:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 772 transitions. [2023-12-02 15:33:16,407 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 772 transitions. Word has length 154 [2023-12-02 15:33:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:16,407 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 772 transitions. [2023-12-02 15:33:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 15:33:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 772 transitions. [2023-12-02 15:33:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-02 15:33:16,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:16,410 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:16,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (19)] Ended with exit code 0 [2023-12-02 15:33:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:16,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 538643593, now seen corresponding path program 1 times [2023-12-02 15:33:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121813987] [2023-12-02 15:33:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:16,612 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 15:33:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:16,613 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:16,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (20)] Waiting until timeout for monitored process [2023-12-02 15:33:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:17,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:33:17,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:17,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:17,522 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121813987] [2023-12-02 15:33:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121813987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:33:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270008144] [2023-12-02 15:33:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:33:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:33:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:33:17,525 INFO L87 Difference]: Start difference. First operand 609 states and 772 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:17,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:17,941 INFO L93 Difference]: Finished difference Result 1233 states and 1565 transitions. [2023-12-02 15:33:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:17,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 156 [2023-12-02 15:33:17,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:17,945 INFO L225 Difference]: With dead ends: 1233 [2023-12-02 15:33:17,946 INFO L226 Difference]: Without dead ends: 645 [2023-12-02 15:33:17,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:33:17,947 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 49 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:17,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 486 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:33:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-02 15:33:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 621. [2023-12-02 15:33:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 450 states have (on average 1.1644444444444444) internal successors, (524), 457 states have internal predecessors, (524), 130 states have call successors, (130), 40 states have call predecessors, (130), 40 states have return successors, (130), 123 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-02 15:33:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 784 transitions. [2023-12-02 15:33:18,128 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 784 transitions. Word has length 156 [2023-12-02 15:33:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:18,128 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 784 transitions. [2023-12-02 15:33:18,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 784 transitions. [2023-12-02 15:33:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 15:33:18,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:18,131 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:18,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (20)] Ended with exit code 0 [2023-12-02 15:33:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:18,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1536498845, now seen corresponding path program 1 times [2023-12-02 15:33:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652116728] [2023-12-02 15:33:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:18,333 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 15:33:18,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:18,334 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:18,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (21)] Waiting until timeout for monitored process [2023-12-02 15:33:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:19,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:33:19,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:19,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-02 15:33:19,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 29 [2023-12-02 15:33:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:19,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:19,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:19,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652116728] [2023-12-02 15:33:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652116728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:19,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610982987] [2023-12-02 15:33:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:19,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:19,421 INFO L87 Difference]: Start difference. First operand 621 states and 784 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:21,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:24,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:26,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:28,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:30,178 INFO L93 Difference]: Finished difference Result 633 states and 796 transitions. [2023-12-02 15:33:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:33:30,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 158 [2023-12-02 15:33:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:30,183 INFO L225 Difference]: With dead ends: 633 [2023-12-02 15:33:30,183 INFO L226 Difference]: Without dead ends: 631 [2023-12-02 15:33:30,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:33:30,184 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 128 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:30,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 724 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 308 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2023-12-02 15:33:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-12-02 15:33:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 627. [2023-12-02 15:33:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 456 states have (on average 1.162280701754386) internal successors, (530), 463 states have internal predecessors, (530), 130 states have call successors, (130), 40 states have call predecessors, (130), 40 states have return successors, (130), 123 states have call predecessors, (130), 130 states have call successors, (130) [2023-12-02 15:33:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 790 transitions. [2023-12-02 15:33:30,312 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 790 transitions. Word has length 158 [2023-12-02 15:33:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:30,312 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 790 transitions. [2023-12-02 15:33:30,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 790 transitions. [2023-12-02 15:33:30,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-02 15:33:30,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:30,314 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:30,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (21)] Ended with exit code 0 [2023-12-02 15:33:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:30,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:30,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash 655254550, now seen corresponding path program 1 times [2023-12-02 15:33:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000235640] [2023-12-02 15:33:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:30,516 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 15:33:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:30,517 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:30,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (22)] Waiting until timeout for monitored process [2023-12-02 15:33:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:31,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:33:31,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:31,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:33:31,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-12-02 15:33:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:31,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:31,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000235640] [2023-12-02 15:33:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000235640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:31,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:33:31,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891291241] [2023-12-02 15:33:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:31,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:33:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:33:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:33:31,706 INFO L87 Difference]: Start difference. First operand 627 states and 790 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:34,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:36,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:39,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:43,682 INFO L93 Difference]: Finished difference Result 1419 states and 1782 transitions. [2023-12-02 15:33:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2023-12-02 15:33:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:43,688 INFO L225 Difference]: With dead ends: 1419 [2023-12-02 15:33:43,688 INFO L226 Difference]: Without dead ends: 813 [2023-12-02 15:33:43,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:43,689 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 89 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:43,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 552 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-12-02 15:33:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-12-02 15:33:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 738. [2023-12-02 15:33:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 546 states have (on average 1.1703296703296704) internal successors, (639), 554 states have internal predecessors, (639), 146 states have call successors, (146), 45 states have call predecessors, (146), 45 states have return successors, (146), 138 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 15:33:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 931 transitions. [2023-12-02 15:33:43,846 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 931 transitions. Word has length 159 [2023-12-02 15:33:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:43,847 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 931 transitions. [2023-12-02 15:33:43,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 931 transitions. [2023-12-02 15:33:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 15:33:43,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:43,849 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:43,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (22)] Ended with exit code 0 [2023-12-02 15:33:44,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:44,050 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:44,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:44,050 INFO L85 PathProgramCache]: Analyzing trace with hash -16001920, now seen corresponding path program 1 times [2023-12-02 15:33:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286656935] [2023-12-02 15:33:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:44,051 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 15:33:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:44,052 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:44,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (23)] Waiting until timeout for monitored process [2023-12-02 15:33:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:44,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:33:44,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:45,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:33:45,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 53 [2023-12-02 15:33:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:45,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:45,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:45,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286656935] [2023-12-02 15:33:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286656935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:45,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426537281] [2023-12-02 15:33:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:45,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:45,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:45,274 INFO L87 Difference]: Start difference. First operand 738 states and 931 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:47,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:49,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:33:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:51,429 INFO L93 Difference]: Finished difference Result 1436 states and 1805 transitions. [2023-12-02 15:33:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:33:51,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-02 15:33:51,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:51,435 INFO L225 Difference]: With dead ends: 1436 [2023-12-02 15:33:51,435 INFO L226 Difference]: Without dead ends: 743 [2023-12-02 15:33:51,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:33:51,437 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 96 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:51,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 470 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 15:33:51,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-02 15:33:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 738. [2023-12-02 15:33:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 546 states have (on average 1.152014652014652) internal successors, (629), 554 states have internal predecessors, (629), 146 states have call successors, (146), 45 states have call predecessors, (146), 45 states have return successors, (146), 138 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 15:33:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 921 transitions. [2023-12-02 15:33:51,593 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 921 transitions. Word has length 161 [2023-12-02 15:33:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:51,594 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 921 transitions. [2023-12-02 15:33:51,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 921 transitions. [2023-12-02 15:33:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 15:33:51,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:51,596 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:51,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (23)] Ended with exit code 0 [2023-12-02 15:33:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:51,797 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1816263744, now seen corresponding path program 1 times [2023-12-02 15:33:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790819956] [2023-12-02 15:33:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:51,799 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 15:33:51,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:51,800 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:51,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (24)] Waiting until timeout for monitored process [2023-12-02 15:33:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:52,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:33:52,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:52,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:52,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790819956] [2023-12-02 15:33:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790819956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:33:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620032022] [2023-12-02 15:33:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:33:52,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:33:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:33:52,658 INFO L87 Difference]: Start difference. First operand 738 states and 921 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:53,137 INFO L93 Difference]: Finished difference Result 755 states and 942 transitions. [2023-12-02 15:33:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:33:53,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-02 15:33:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:53,142 INFO L225 Difference]: With dead ends: 755 [2023-12-02 15:33:53,142 INFO L226 Difference]: Without dead ends: 753 [2023-12-02 15:33:53,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:33:53,142 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 9 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 627 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:33:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-02 15:33:53,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 745. [2023-12-02 15:33:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 553 states have (on average 1.1500904159132008) internal successors, (636), 561 states have internal predecessors, (636), 146 states have call successors, (146), 45 states have call predecessors, (146), 45 states have return successors, (146), 138 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 15:33:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 928 transitions. [2023-12-02 15:33:53,303 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 928 transitions. Word has length 161 [2023-12-02 15:33:53,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:53,304 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 928 transitions. [2023-12-02 15:33:53,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:53,304 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 928 transitions. [2023-12-02 15:33:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 15:33:53,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:53,306 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:53,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (24)] Ended with exit code 0 [2023-12-02 15:33:53,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:53,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:53,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1565982050, now seen corresponding path program 1 times [2023-12-02 15:33:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189408685] [2023-12-02 15:33:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:53,508 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 15:33:53,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:53,509 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:53,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (25)] Waiting until timeout for monitored process [2023-12-02 15:33:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:54,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:33:54,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:33:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-02 15:33:54,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:33:54,249 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:33:54,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189408685] [2023-12-02 15:33:54,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189408685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:33:54,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:33:54,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:33:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363026610] [2023-12-02 15:33:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:33:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:33:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:33:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:33:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:33:54,251 INFO L87 Difference]: Start difference. First operand 745 states and 928 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:55,193 INFO L93 Difference]: Finished difference Result 1505 states and 1865 transitions. [2023-12-02 15:33:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:33:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2023-12-02 15:33:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:55,198 INFO L225 Difference]: With dead ends: 1505 [2023-12-02 15:33:55,198 INFO L226 Difference]: Without dead ends: 805 [2023-12-02 15:33:55,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:33:55,199 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 15 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:55,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 257 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:33:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-02 15:33:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 750. [2023-12-02 15:33:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 558 states have (on average 1.1487455197132617) internal successors, (641), 566 states have internal predecessors, (641), 146 states have call successors, (146), 45 states have call predecessors, (146), 45 states have return successors, (146), 138 states have call predecessors, (146), 146 states have call successors, (146) [2023-12-02 15:33:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 933 transitions. [2023-12-02 15:33:55,359 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 933 transitions. Word has length 161 [2023-12-02 15:33:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:55,360 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 933 transitions. [2023-12-02 15:33:55,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2023-12-02 15:33:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 933 transitions. [2023-12-02 15:33:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 15:33:55,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:55,361 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:33:55,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (25)] Ended with exit code 0 [2023-12-02 15:33:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:55,562 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:33:55,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash 784436647, now seen corresponding path program 1 times [2023-12-02 15:33:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:33:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311061292] [2023-12-02 15:33:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:55,564 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 15:33:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:33:55,565 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 15:33:55,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc73437-7a0a-4cc1-9047-dbaf3e7c9206/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 (26)] Waiting until timeout for monitored process