./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.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_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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_c2c28df5-846e-403b-ae73-0fbc653bc594/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 742f62ff84f22bccca510ba2fb19e3898eba0b612c7ec1ceea7f75329541d889 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:23:08,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:23:08,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:23:08,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:23:08,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:23:08,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:23:08,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:23:08,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:23:08,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:23:08,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:23:08,578 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:23:08,578 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:23:08,579 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:23:08,579 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:23:08,580 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:23:08,580 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:23:08,581 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:23:08,581 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:23:08,581 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:23:08,582 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:23:08,582 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:23:08,583 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:23:08,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:23:08,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:23:08,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:23:08,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:23:08,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:23:08,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:23:08,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:23:08,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:23:08,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:23:08,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:23:08,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:23:08,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:23:08,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:23:08,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:23:08,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:23:08,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:08,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:23:08,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:23:08,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:23:08,589 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:23:08,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:23:08,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:23:08,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:23:08,590 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:23:08,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:23:08,590 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_c2c28df5-846e-403b-ae73-0fbc653bc594/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742f62ff84f22bccca510ba2fb19e3898eba0b612c7ec1ceea7f75329541d889 [2023-12-02 16:23:08,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:23:08,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:23:08,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:23:08,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:23:08,866 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:23:08,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:11,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:23:11,789 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:23:11,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:11,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/49163d115/492acf9fbf42417c96b5a69782b038b3/FLAG47950b84e [2023-12-02 16:23:11,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/49163d115/492acf9fbf42417c96b5a69782b038b3 [2023-12-02 16:23:11,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:23:11,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:23:11,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:11,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:23:11,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:23:11,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:11" (1/1) ... [2023-12-02 16:23:11,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac12547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:11, skipping insertion in model container [2023-12-02 16:23:11,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:11" (1/1) ... [2023-12-02 16:23:11,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:23:12,006 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_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i[916,929] [2023-12-02 16:23:12,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:12,078 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:23:12,091 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_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i[916,929] [2023-12-02 16:23:12,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:12,145 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:23:12,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12 WrapperNode [2023-12-02 16:23:12,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:12,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:12,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:23:12,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:23:12,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,202 INFO L138 Inliner]: procedures = 29, calls = 189, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 512 [2023-12-02 16:23:12,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:12,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:23:12,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:23:12,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:23:12,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:23:12,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:23:12,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:23:12,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:23:12,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (1/1) ... [2023-12-02 16:23:12,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:12,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:12,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:23:12,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:23:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 16:23:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:23:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:23:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:23:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:23:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:23:12,432 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:23:12,434 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:23:12,919 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:23:13,516 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:23:13,516 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:23:13,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:13 BoogieIcfgContainer [2023-12-02 16:23:13,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:23:13,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:23:13,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:23:13,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:23:13,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:23:11" (1/3) ... [2023-12-02 16:23:13,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228dcf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:13, skipping insertion in model container [2023-12-02 16:23:13,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:12" (2/3) ... [2023-12-02 16:23:13,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228dcf9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:13, skipping insertion in model container [2023-12-02 16:23:13,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:13" (3/3) ... [2023-12-02 16:23:13,525 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:13,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:23:13,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:23:13,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:23:13,592 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;@77cae2df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:23:13,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:23:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:23:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 16:23:13,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:13,605 INFO L195 NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:13,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:13,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 787190846, now seen corresponding path program 1 times [2023-12-02 16:23:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:13,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30508382] [2023-12-02 16:23:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:13,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:23:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526065664] [2023-12-02 16:23:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:13,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:13,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:23:13,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:23:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:23:15,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:23:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:23:17,365 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:23:17,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:23:17,369 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:23:17,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:23:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:23:17,575 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:23:17,578 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:23:17,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 16:23:17,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated [2023-12-02 16:23:17,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short61 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short58 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short62 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 16:23:17,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short61 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short62 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short58 could not be translated [2023-12-02 16:23:17,632 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:23:17,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short69 could not be translated [2023-12-02 16:23:17,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short70 could not be translated [2023-12-02 16:23:17,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 16:23:17,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated [2023-12-02 16:23:17,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 16:23:17,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:23:17,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated [2023-12-02 16:23:17,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:23:17,634 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated [2023-12-02 16:23:17,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short70 could not be translated [2023-12-02 16:23:17,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 16:23:17,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short69 could not be translated [2023-12-02 16:23:17,635 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem75 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated [2023-12-02 16:23:17,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short77 could not be translated [2023-12-02 16:23:17,637 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated [2023-12-02 16:23:17,637 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated [2023-12-02 16:23:17,637 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem75 could not be translated [2023-12-02 16:23:17,637 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:23:17,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated [2023-12-02 16:23:17,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 16:23:17,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short77 could not be translated [2023-12-02 16:23:17,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:23:17,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:23:17,639 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated [2023-12-02 16:23:17,639 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated [2023-12-02 16:23:17,639 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated [2023-12-02 16:23:17,640 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated [2023-12-02 16:23:17,640 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:23:17,641 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:23:17,641 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated [2023-12-02 16:23:17,642 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated [2023-12-02 16:23:17,642 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:23:17,643 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:23:17,643 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated [2023-12-02 16:23:17,643 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated [2023-12-02 16:23:17,644 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-12-02 16:23:17,644 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-12-02 16:23:17,645 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated [2023-12-02 16:23:17,645 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated [2023-12-02 16:23:17,645 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated [2023-12-02 16:23:17,646 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated [2023-12-02 16:23:17,646 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated [2023-12-02 16:23:17,647 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated [2023-12-02 16:23:17,648 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated [2023-12-02 16:23:17,648 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated [2023-12-02 16:23:17,649 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 16:23:17,649 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 16:23:17,650 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated [2023-12-02 16:23:17,650 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated [2023-12-02 16:23:17,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:23:17 BoogieIcfgContainer [2023-12-02 16:23:17,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:23:17,670 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:23:17,670 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:23:17,670 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:23:17,671 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:13" (3/4) ... [2023-12-02 16:23:17,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:23:17,673 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:23:17,674 INFO L158 Benchmark]: Toolchain (without parser) took 5856.77ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 131.6MB in the beginning and 154.3MB in the end (delta: -22.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,675 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:23:17,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.10ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 115.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.72ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 111.8MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,677 INFO L158 Benchmark]: Boogie Preprocessor took 59.16ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 108.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,677 INFO L158 Benchmark]: RCFGBuilder took 1255.67ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 66.4MB in the end (delta: 41.6MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,678 INFO L158 Benchmark]: TraceAbstraction took 4149.40ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 66.4MB in the beginning and 154.3MB in the end (delta: -87.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-12-02 16:23:17,678 INFO L158 Benchmark]: Witness Printer took 3.50ms. Allocated memory is still 201.3MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:23:17,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.10ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 115.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.72ms. Allocated memory is still 167.8MB. Free memory was 115.9MB in the beginning and 111.8MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.16ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 108.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1255.67ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 66.4MB in the end (delta: 41.6MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4149.40ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 66.4MB in the beginning and 154.3MB in the end (delta: -87.8MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 3.50ms. Allocated memory is still 201.3MB. Free memory is still 154.3MB. 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~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short69 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short69 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem76 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem92 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem93 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem95 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem99 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someUnaryDOUBLEoperation at line 23. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22-L24] float float_Array_0[3] = { -0.25, 8.4, 49.25 }; [L25-L27] signed short int signed_short_int_Array_0[5] = { 100, -4, 128, 10, 1 }; [L28-L30] unsigned long int unsigned_long_int_Array_0[2][3] = { {64, 10, 64}, {16, 64, 100000000} }; [L99] isInitial = 1 [L100] FCALL initially() [L101] COND TRUE 1 [L102] FCALL updateLastVariables() [L103] CALL updateVariables() [L64] float_Array_0[0] = __VERIFIER_nondet_float() [L65] EXPR float_Array_0[0] [L65] EXPR float_Array_0[0] >= -922337.2036854776000e+13F && float_Array_0[0] <= -1.0e-20F [L65] EXPR float_Array_0[0] [L65] EXPR float_Array_0[0] >= -922337.2036854776000e+13F && float_Array_0[0] <= -1.0e-20F [L65] EXPR (float_Array_0[0] >= -922337.2036854776000e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854776000e+12F && float_Array_0[0] >= 1.0e-20F ) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L65] CALL assume_abort_if_not((float_Array_0[0] >= -922337.2036854776000e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854776000e+12F && float_Array_0[0] >= 1.0e-20F )) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((float_Array_0[0] >= -922337.2036854776000e+13F && float_Array_0[0] <= -1.0e-20F) || (float_Array_0[0] <= 9223372.036854776000e+12F && float_Array_0[0] >= 1.0e-20F )) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L66] float_Array_0[1] = __VERIFIER_nondet_float() [L67] EXPR float_Array_0[1] [L67] EXPR float_Array_0[1] >= -922337.2036854776000e+13F && float_Array_0[1] <= -1.0e-20F [L67] EXPR float_Array_0[1] [L67] EXPR float_Array_0[1] >= -922337.2036854776000e+13F && float_Array_0[1] <= -1.0e-20F [L67] EXPR (float_Array_0[1] >= -922337.2036854776000e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854776000e+12F && float_Array_0[1] >= 1.0e-20F ) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L67] CALL assume_abort_if_not((float_Array_0[1] >= -922337.2036854776000e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854776000e+12F && float_Array_0[1] >= 1.0e-20F )) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((float_Array_0[1] >= -922337.2036854776000e+13F && float_Array_0[1] <= -1.0e-20F) || (float_Array_0[1] <= 9223372.036854776000e+12F && float_Array_0[1] >= 1.0e-20F )) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L68] float_Array_0[2] = __VERIFIER_nondet_float() [L69] EXPR float_Array_0[2] [L69] EXPR float_Array_0[2] >= -922337.2036854776000e+13F && float_Array_0[2] <= -1.0e-20F [L69] EXPR float_Array_0[2] [L69] EXPR float_Array_0[2] >= -922337.2036854776000e+13F && float_Array_0[2] <= -1.0e-20F [L69] EXPR (float_Array_0[2] >= -922337.2036854776000e+13F && float_Array_0[2] <= -1.0e-20F) || (float_Array_0[2] <= 9223372.036854776000e+12F && float_Array_0[2] >= 1.0e-20F ) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L69] CALL assume_abort_if_not((float_Array_0[2] >= -922337.2036854776000e+13F && float_Array_0[2] <= -1.0e-20F) || (float_Array_0[2] <= 9223372.036854776000e+12F && float_Array_0[2] >= 1.0e-20F )) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not((float_Array_0[2] >= -922337.2036854776000e+13F && float_Array_0[2] <= -1.0e-20F) || (float_Array_0[2] <= 9223372.036854776000e+12F && float_Array_0[2] >= 1.0e-20F )) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L70] signed_short_int_Array_0[1] = __VERIFIER_nondet_short() [L71] EXPR signed_short_int_Array_0[1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L71] CALL assume_abort_if_not(signed_short_int_Array_0[1] >= -32767) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(signed_short_int_Array_0[1] >= -32767) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L72] EXPR signed_short_int_Array_0[1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L72] CALL assume_abort_if_not(signed_short_int_Array_0[1] <= 32766) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(signed_short_int_Array_0[1] <= 32766) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L73] signed_short_int_Array_0[2] = __VERIFIER_nondet_short() [L74] EXPR signed_short_int_Array_0[2] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L74] CALL assume_abort_if_not(signed_short_int_Array_0[2] >= -1) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(signed_short_int_Array_0[2] >= -1) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L75] EXPR signed_short_int_Array_0[2] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L75] CALL assume_abort_if_not(signed_short_int_Array_0[2] <= 32766) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(signed_short_int_Array_0[2] <= 32766) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L76] signed_short_int_Array_0[3] = __VERIFIER_nondet_short() [L77] EXPR signed_short_int_Array_0[3] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L77] CALL assume_abort_if_not(signed_short_int_Array_0[3] >= 0) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(signed_short_int_Array_0[3] >= 0) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L78] EXPR signed_short_int_Array_0[3] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L78] CALL assume_abort_if_not(signed_short_int_Array_0[3] <= 32766) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(signed_short_int_Array_0[3] <= 32766) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L79] unsigned_long_int_Array_0[1][0] = __VERIFIER_nondet_ulong() [L80] EXPR unsigned_long_int_Array_0[1][0] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L80] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][0] >= 0) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(unsigned_long_int_Array_0[1][0] >= 0) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L81] EXPR unsigned_long_int_Array_0[1][0] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L81] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][0] <= 4294967294) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(unsigned_long_int_Array_0[1][0] <= 4294967294) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L82] unsigned_long_int_Array_0[0][1] = __VERIFIER_nondet_ulong() [L83] EXPR unsigned_long_int_Array_0[0][1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L83] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][1] >= 0) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(unsigned_long_int_Array_0[0][1] >= 0) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L84] EXPR unsigned_long_int_Array_0[0][1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L84] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][1] <= 4294967294) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(unsigned_long_int_Array_0[0][1] <= 4294967294) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L85] unsigned_long_int_Array_0[1][1] = __VERIFIER_nondet_ulong() [L86] EXPR unsigned_long_int_Array_0[1][1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L86] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][1] >= 0) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(unsigned_long_int_Array_0[1][1] >= 0) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L87] EXPR unsigned_long_int_Array_0[1][1] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L87] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][1] <= 4294967294) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(unsigned_long_int_Array_0[1][1] <= 4294967294) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L88] unsigned_long_int_Array_0[0][2] = __VERIFIER_nondet_ulong() [L89] EXPR unsigned_long_int_Array_0[0][2] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L89] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][2] >= 0) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(unsigned_long_int_Array_0[0][2] >= 0) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L90] EXPR unsigned_long_int_Array_0[0][2] VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L90] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][2] <= 4294967294) VAL [\old(cond)=1, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(unsigned_long_int_Array_0[0][2] <= 4294967294) VAL [float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L103] RET updateVariables() [L104] CALL step() [L34] EXPR float_Array_0[2] [L34] COND TRUE float_Array_0[2] >= 50.4f [L35] EXPR unsigned_long_int_Array_0[0][2] [L35] EXPR unsigned_long_int_Array_0[1][1] [L35] EXPR ((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]) [L35] EXPR unsigned_long_int_Array_0[0][2] [L35] EXPR ((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]) [L35] unsigned_long_int_Array_0[1][2] = ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))) [L37] EXPR unsigned_long_int_Array_0[0][2] [L37] EXPR unsigned_long_int_Array_0[1][2] [L37] EXPR unsigned_long_int_Array_0[1][1] [L37] COND TRUE unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1]) [L38] EXPR float_Array_0[2] [L38] EXPR float_Array_0[1] [L38] EXPR float_Array_0[0] [L38] COND FALSE !(float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) [L41] signed_short_int_Array_0[4] = 32 [L46] EXPR unsigned_long_int_Array_0[1][1] [L46] EXPR unsigned_long_int_Array_0[0][2] [L46] COND FALSE !(! (unsigned_long_int_Array_0[1][1] < unsigned_long_int_Array_0[0][2])) [L49] EXPR unsigned_long_int_Array_0[0][1] [L49] EXPR unsigned_long_int_Array_0[1][0] [L49] EXPR ((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0]) [L49] EXPR unsigned_long_int_Array_0[0][1] [L49] EXPR ((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0]) [L49] unsigned_long_int_Array_0[0][0] = ((((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0]))) [L51] EXPR unsigned_long_int_Array_0[1][0] [L51] EXPR unsigned_long_int_Array_0[0][0] [L51] COND FALSE !(unsigned_long_int_Array_0[1][0] > unsigned_long_int_Array_0[0][0]) [L60] EXPR signed_short_int_Array_0[3] [L60] signed_short_int_Array_0[0] = signed_short_int_Array_0[3] [L104] RET step() [L105] CALL, EXPR property() [L95] EXPR float_Array_0[2] [L95] EXPR (float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1 [L95] EXPR ((float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1) && ((unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1]))) [L95] EXPR unsigned_long_int_Array_0[0][2] [L95] EXPR unsigned_long_int_Array_0[1][2] [L95] EXPR unsigned_long_int_Array_0[1][1] [L95] EXPR (unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) [L95] EXPR float_Array_0[2] [L95] EXPR float_Array_0[1] [L95] EXPR float_Array_0[0] [L95] EXPR (float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32)) [L95] EXPR signed_short_int_Array_0[4] [L95] EXPR signed_short_int_Array_0[1] [L95] EXPR (float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32)) [L95] EXPR (unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) [L95] EXPR ((float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1) && ((unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1]))) [L95] EXPR (((float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1) && ((unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])))) && ((! (unsigned_long_int_Array_0[1][1] < unsigned_long_int_Array_0[0][2])) ? (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) < (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1]))))) ? (((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) : (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1])))))))) : (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0])))))) [L95] EXPR ((((float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1) && ((unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])))) && ((! (unsigned_long_int_Array_0[1][1] < unsigned_long_int_Array_0[0][2])) ? (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) < (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1]))))) ? (((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) : (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1])))))))) : (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0]))))))) && ((unsigned_long_int_Array_0[1][0] > unsigned_long_int_Array_0[0][0]) ? ((63.1 >= float_Array_0[0]) ? ((float_Array_0[0] >= float_Array_0[2]) ? (signed_short_int_Array_0[0] == ((signed short int) (signed_short_int_Array_0[2] - signed_short_int_Array_0[3]))) : (signed_short_int_Array_0[0] == ((signed short int) signed_short_int_Array_0[2]))) : 1) : (signed_short_int_Array_0[0] == ((signed short int) signed_short_int_Array_0[3]))) [L95-L96] return ((((float_Array_0[2] >= 50.4f) ? (unsigned_long_int_Array_0[1][2] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][2]) > (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1]))))) : 1) && ((unsigned_long_int_Array_0[0][2] == (unsigned_long_int_Array_0[1][2] * unsigned_long_int_Array_0[1][1])) ? ((float_Array_0[2] >= (float_Array_0[1] + float_Array_0[0])) ? (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])) : (signed_short_int_Array_0[4] == ((signed short int) 32))) : (signed_short_int_Array_0[4] == ((signed short int) signed_short_int_Array_0[1])))) && ((! (unsigned_long_int_Array_0[1][1] < unsigned_long_int_Array_0[0][2])) ? (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) < (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1]))))) ? (((((unsigned_long_int_Array_0[0][2]) < (unsigned_long_int_Array_0[1][1])) ? (unsigned_long_int_Array_0[0][2]) : (unsigned_long_int_Array_0[1][1])))) : (((((unsigned_long_int_Array_0[1][0]) > (unsigned_long_int_Array_0[0][1])) ? (unsigned_long_int_Array_0[1][0]) : (unsigned_long_int_Array_0[0][1])))))))) : (unsigned_long_int_Array_0[0][0] == ((unsigned long int) ((((unsigned_long_int_Array_0[0][1]) > (unsigned_long_int_Array_0[1][0])) ? (unsigned_long_int_Array_0[0][1]) : (unsigned_long_int_Array_0[1][0]))))))) && ((unsigned_long_int_Array_0[1][0] > unsigned_long_int_Array_0[0][0]) ? ((63.1 >= float_Array_0[0]) ? ((float_Array_0[0] >= float_Array_0[2]) ? (signed_short_int_Array_0[0] == ((signed short int) (signed_short_int_Array_0[2] - signed_short_int_Array_0[3]))) : (signed_short_int_Array_0[0] == ((signed short int) signed_short_int_Array_0[2]))) : 1) : (signed_short_int_Array_0[0] == ((signed short int) signed_short_int_Array_0[3]))) ; [L105] RET, EXPR property() [L105] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] [L19] reach_error() VAL [\old(cond)=0, cond=0, float_Array_0={4:0}, isInitial=1, signed_short_int_Array_0={5:0}, unsigned_long_int_Array_0={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 1, TraceHistogramMax: 17, 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=43occurred 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, 1.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 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 16:23:17,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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_c2c28df5-846e-403b-ae73-0fbc653bc594/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 742f62ff84f22bccca510ba2fb19e3898eba0b612c7ec1ceea7f75329541d889 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:23:19,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:23:19,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:23:19,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:23:19,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:23:19,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:23:19,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:23:19,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:23:19,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:23:19,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:23:19,762 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:23:19,762 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:23:19,763 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:23:19,763 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:23:19,764 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:23:19,764 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:23:19,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:23:19,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:23:19,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:23:19,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:23:19,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:23:19,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:23:19,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:23:19,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:23:19,769 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:23:19,770 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:23:19,770 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:23:19,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:23:19,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:23:19,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:23:19,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:23:19,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:23:19,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:23:19,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:23:19,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:19,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:23:19,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:23:19,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:23:19,774 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:23:19,774 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:23:19,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:23:19,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:23:19,775 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:23:19,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:23:19,776 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_c2c28df5-846e-403b-ae73-0fbc653bc594/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742f62ff84f22bccca510ba2fb19e3898eba0b612c7ec1ceea7f75329541d889 [2023-12-02 16:23:20,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:23:20,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:23:20,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:23:20,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:23:20,072 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:23:20,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:22,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:23:23,044 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:23:23,044 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:23,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/0c72390f4/4cf93f3842aa45ebbc0c0df9014f99c0/FLAGd1cf09bc8 [2023-12-02 16:23:23,072 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/data/0c72390f4/4cf93f3842aa45ebbc0c0df9014f99c0 [2023-12-02 16:23:23,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:23:23,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:23:23,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:23,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:23:23,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:23:23,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23, skipping insertion in model container [2023-12-02 16:23:23,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:23:23,233 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_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i[916,929] [2023-12-02 16:23:23,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:23,322 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:23:23,332 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_c2c28df5-846e-403b-ae73-0fbc653bc594/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-91.i[916,929] [2023-12-02 16:23:23,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:23,407 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:23:23,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23 WrapperNode [2023-12-02 16:23:23,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:23,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:23,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:23:23,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:23:23,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,477 INFO L138 Inliner]: procedures = 36, calls = 189, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 509 [2023-12-02 16:23:23,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:23,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:23:23,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:23:23,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:23:23,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,543 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:23:23,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:23:23,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:23:23,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:23:23,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (1/1) ... [2023-12-02 16:23:23,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:23,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:23,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:23:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:23:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:23:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-12-02 16:23:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:23:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 16:23:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:23:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:23:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:23:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:23:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-12-02 16:23:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:23:23,749 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:23:23,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:23:24,986 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:23:25,025 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:23:25,025 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:23:25,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:25 BoogieIcfgContainer [2023-12-02 16:23:25,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:23:25,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:23:25,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:23:25,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:23:25,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:23:23" (1/3) ... [2023-12-02 16:23:25,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323dfd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:25, skipping insertion in model container [2023-12-02 16:23:25,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:23" (2/3) ... [2023-12-02 16:23:25,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323dfd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:25, skipping insertion in model container [2023-12-02 16:23:25,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:25" (3/3) ... [2023-12-02 16:23:25,034 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-91.i [2023-12-02 16:23:25,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:23:25,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:23:25,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:23:25,103 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;@22c432a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:23:25,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:23:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 99 states have internal predecessors, (143), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:23:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 16:23:25,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:25,124 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:25,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:25,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -768211268, now seen corresponding path program 1 times [2023-12-02 16:23:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:25,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649093006] [2023-12-02 16:23:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:25,144 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 16:23:25,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:25,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:25,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:25,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:23:25,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-02 16:23:25,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:25,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:25,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649093006] [2023-12-02 16:23:25,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649093006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:25,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:23:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069858240] [2023-12-02 16:23:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:23:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:23:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:23:25,540 INFO L87 Difference]: Start difference. First operand has 118 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 99 states have internal predecessors, (143), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:25,598 INFO L93 Difference]: Finished difference Result 233 states and 369 transitions. [2023-12-02 16:23:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:23:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 133 [2023-12-02 16:23:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:25,609 INFO L225 Difference]: With dead ends: 233 [2023-12-02 16:23:25,609 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 16:23:25,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 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 16:23:25,616 INFO L413 NwaCegarLoop]: 168 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, 168 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 16:23:25,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:23:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 16:23:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-02 16:23:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.422680412371134) internal successors, (138), 97 states have internal predecessors, (138), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:23:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2023-12-02 16:23:25,666 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 133 [2023-12-02 16:23:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:25,666 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2023-12-02 16:23:25,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:25,667 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2023-12-02 16:23:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 16:23:25,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:25,671 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:25,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:25,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:25,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:25,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -580207458, now seen corresponding path program 1 times [2023-12-02 16:23:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625073948] [2023-12-02 16:23:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:25,878 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 16:23:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:25,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:25,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:26,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:23:26,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:23:26,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:26,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625073948] [2023-12-02 16:23:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625073948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:23:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414543632] [2023-12-02 16:23:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:26,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:23:26,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:23:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:23:26,263 INFO L87 Difference]: Start difference. First operand 116 states and 172 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:23:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:26,339 INFO L93 Difference]: Finished difference Result 261 states and 388 transitions. [2023-12-02 16:23:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:23:26,340 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-12-02 16:23:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:26,343 INFO L225 Difference]: With dead ends: 261 [2023-12-02 16:23:26,343 INFO L226 Difference]: Without dead ends: 146 [2023-12-02 16:23:26,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 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 16:23:26,346 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 54 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:26,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 487 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:23:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-02 16:23:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2023-12-02 16:23:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 99 states have internal predecessors, (140), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:23:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 174 transitions. [2023-12-02 16:23:26,362 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 174 transitions. Word has length 133 [2023-12-02 16:23:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 174 transitions. [2023-12-02 16:23:26,364 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:23:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 174 transitions. [2023-12-02 16:23:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 16:23:26,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:26,368 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:26,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:26,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:26,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1132001300, now seen corresponding path program 1 times [2023-12-02 16:23:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65428700] [2023-12-02 16:23:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:26,574 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 16:23:26,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:26,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:26,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 (4)] Waiting until timeout for monitored process [2023-12-02 16:23:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:26,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 16:23:26,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:27,239 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 16:23:27,317 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 16:23:27,514 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 30 treesize of output 14 [2023-12-02 16:23:27,675 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 19 treesize of output 14 [2023-12-02 16:23:27,822 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 19 treesize of output 14 [2023-12-02 16:23:27,986 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 19 treesize of output 14 [2023-12-02 16:23:28,129 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 19 treesize of output 14 [2023-12-02 16:23:28,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:28,311 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 32 treesize of output 34 [2023-12-02 16:23:28,439 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 36 treesize of output 27 [2023-12-02 16:23:28,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:28,523 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 47 treesize of output 55 [2023-12-02 16:23:28,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:28,727 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 91 treesize of output 39 [2023-12-02 16:23:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-02 16:23:28,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:28,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65428700] [2023-12-02 16:23:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65428700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:28,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:28,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:23:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851546636] [2023-12-02 16:23:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:28,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:23:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:23:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:23:28,791 INFO L87 Difference]: Start difference. First operand 118 states and 174 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:32,631 INFO L93 Difference]: Finished difference Result 388 states and 567 transitions. [2023-12-02 16:23:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:23:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-12-02 16:23:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:32,634 INFO L225 Difference]: With dead ends: 388 [2023-12-02 16:23:32,634 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 16:23:32,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:23:32,636 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1205 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:32,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 461 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 16:23:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 16:23:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 151. [2023-12-02 16:23:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 131 states have internal predecessors, (186), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:23:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 220 transitions. [2023-12-02 16:23:32,654 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 220 transitions. Word has length 135 [2023-12-02 16:23:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:32,655 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 220 transitions. [2023-12-02 16:23:32,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 220 transitions. [2023-12-02 16:23:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 16:23:32,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:32,659 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:32,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 (4)] Ended with exit code 0 [2023-12-02 16:23:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:32,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:32,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1105224291, now seen corresponding path program 1 times [2023-12-02 16:23:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712874228] [2023-12-02 16:23:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:32,861 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 16:23:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:32,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:32,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:33,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:23:33,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:33,387 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 16:23:33,977 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 69 treesize of output 54 [2023-12-02 16:23:34,344 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 69 treesize of output 54 [2023-12-02 16:23:34,682 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 69 treesize of output 54 [2023-12-02 16:23:34,975 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 69 treesize of output 54 [2023-12-02 16:23:35,324 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 69 treesize of output 54 [2023-12-02 16:23:35,637 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 69 treesize of output 54 [2023-12-02 16:23:35,970 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 69 treesize of output 54 [2023-12-02 16:23:36,359 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 69 treesize of output 54 [2023-12-02 16:23:36,481 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 69 treesize of output 54 [2023-12-02 16:23:36,569 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 69 treesize of output 54 [2023-12-02 16:23:36,630 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 88 treesize of output 34 [2023-12-02 16:23:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-02 16:23:36,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:36,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712874228] [2023-12-02 16:23:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712874228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:36,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:36,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:23:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918665194] [2023-12-02 16:23:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:23:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:23:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:23:36,698 INFO L87 Difference]: Start difference. First operand 151 states and 220 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:40,900 INFO L93 Difference]: Finished difference Result 444 states and 647 transitions. [2023-12-02 16:23:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:23:40,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-12-02 16:23:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:40,903 INFO L225 Difference]: With dead ends: 444 [2023-12-02 16:23:40,903 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 16:23:40,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:23:40,905 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 469 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:40,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 380 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 16:23:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 16:23:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 287. [2023-12-02 16:23:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 248 states have (on average 1.4112903225806452) internal successors, (350), 249 states have internal predecessors, (350), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:23:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 418 transitions. [2023-12-02 16:23:40,940 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 418 transitions. Word has length 135 [2023-12-02 16:23:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:40,941 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 418 transitions. [2023-12-02 16:23:40,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 418 transitions. [2023-12-02 16:23:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 16:23:40,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:40,944 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:40,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:41,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1260810779, now seen corresponding path program 1 times [2023-12-02 16:23:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:41,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202485222] [2023-12-02 16:23:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:41,146 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 16:23:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:41,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:41,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:23:41,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-02 16:23:41,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:41,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202485222] [2023-12-02 16:23:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202485222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:41,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:41,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:23:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010271179] [2023-12-02 16:23:41,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:23:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:23:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:23:41,414 INFO L87 Difference]: Start difference. First operand 287 states and 418 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:41,480 INFO L93 Difference]: Finished difference Result 577 states and 841 transitions. [2023-12-02 16:23:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:23:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-12-02 16:23:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:41,483 INFO L225 Difference]: With dead ends: 577 [2023-12-02 16:23:41,484 INFO L226 Difference]: Without dead ends: 291 [2023-12-02 16:23:41,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 132 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 16:23:41,485 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 7 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:41,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 501 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:23:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-02 16:23:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2023-12-02 16:23:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 248 states have (on average 1.407258064516129) internal successors, (349), 249 states have internal predecessors, (349), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:23:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 417 transitions. [2023-12-02 16:23:41,510 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 417 transitions. Word has length 135 [2023-12-02 16:23:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:41,510 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 417 transitions. [2023-12-02 16:23:41,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:23:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 417 transitions. [2023-12-02 16:23:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-02 16:23:41,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:41,513 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:41,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 16:23:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:41,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1431676015, now seen corresponding path program 1 times [2023-12-02 16:23:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246573168] [2023-12-02 16:23:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:41,714 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 16:23:41,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:41,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:41,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:23:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:42,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:23:42,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:42,464 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 16:23:42,903 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 32 treesize of output 23 [2023-12-02 16:23:43,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:43,241 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 39 treesize of output 33 [2023-12-02 16:23:43,392 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 32 treesize of output 23 [2023-12-02 16:23:43,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:43,760 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 51 treesize of output 15 [2023-12-02 16:23:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:23:43,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:43,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:43,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246573168] [2023-12-02 16:23:43,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246573168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:43,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:43,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:23:43,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412260574] [2023-12-02 16:23:43,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:43,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:23:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:23:43,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:23:43,951 INFO L87 Difference]: Start difference. First operand 287 states and 417 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:23:48,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:50,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:55,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:57,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:59,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:01,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:03,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:05,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:07,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:13,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:13,568 INFO L93 Difference]: Finished difference Result 731 states and 1065 transitions. [2023-12-02 16:24:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:24:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 136 [2023-12-02 16:24:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:13,576 INFO L225 Difference]: With dead ends: 731 [2023-12-02 16:24:13,576 INFO L226 Difference]: Without dead ends: 445 [2023-12-02 16:24:13,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:24:13,578 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 264 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:13,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 428 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 755 Invalid, 9 Unknown, 0 Unchecked, 29.2s Time] [2023-12-02 16:24:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-02 16:24:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 307. [2023-12-02 16:24:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 268 states have (on average 1.4029850746268657) internal successors, (376), 269 states have internal predecessors, (376), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:24:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 444 transitions. [2023-12-02 16:24:13,607 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 444 transitions. Word has length 136 [2023-12-02 16:24:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:13,607 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 444 transitions. [2023-12-02 16:24:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:24:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 444 transitions. [2023-12-02 16:24:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 16:24:13,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:13,610 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:13,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:13,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:13,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2089412121, now seen corresponding path program 1 times [2023-12-02 16:24:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122843927] [2023-12-02 16:24:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:13,812 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 16:24:13,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:13,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:13,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:14,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:24:14,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:14,587 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 16:24:14,700 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 33 treesize of output 24 [2023-12-02 16:24:15,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:15,200 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 40 treesize of output 34 [2023-12-02 16:24:15,336 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 33 treesize of output 24 [2023-12-02 16:24:15,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:15,704 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 52 treesize of output 16 [2023-12-02 16:24:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:24:15,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:24:15,910 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:15,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122843927] [2023-12-02 16:24:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122843927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:15,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:24:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:24:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994371411] [2023-12-02 16:24:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:15,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:24:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:15,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:24:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:24:15,912 INFO L87 Difference]: Start difference. First operand 307 states and 444 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:24:20,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:23,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:25,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:27,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:29,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:31,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:33,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:37,352 INFO L93 Difference]: Finished difference Result 793 states and 1151 transitions. [2023-12-02 16:24:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:24:37,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 137 [2023-12-02 16:24:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:37,360 INFO L225 Difference]: With dead ends: 793 [2023-12-02 16:24:37,360 INFO L226 Difference]: Without dead ends: 487 [2023-12-02 16:24:37,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:24:37,361 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 447 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:37,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 337 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 466 Invalid, 7 Unknown, 0 Unchecked, 21.0s Time] [2023-12-02 16:24:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-02 16:24:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 335. [2023-12-02 16:24:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 296 states have (on average 1.402027027027027) internal successors, (415), 297 states have internal predecessors, (415), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 16:24:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 483 transitions. [2023-12-02 16:24:37,382 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 483 transitions. Word has length 137 [2023-12-02 16:24:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:37,382 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 483 transitions. [2023-12-02 16:24:37,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:24:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 483 transitions. [2023-12-02 16:24:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 16:24:37,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:37,384 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:37,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:37,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:37,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1042526953, now seen corresponding path program 1 times [2023-12-02 16:24:37,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:37,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917272208] [2023-12-02 16:24:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:37,586 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 16:24:37,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:37,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:24:37,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 16:24:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:37,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:24:37,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:38,077 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 16:24:38,694 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 67 treesize of output 52 [2023-12-02 16:24:39,019 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 67 treesize of output 52 [2023-12-02 16:24:39,379 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 67 treesize of output 52 [2023-12-02 16:24:39,695 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 67 treesize of output 52 [2023-12-02 16:24:40,012 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 67 treesize of output 52 [2023-12-02 16:24:40,354 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 67 treesize of output 52 [2023-12-02 16:24:40,691 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 67 treesize of output 52 [2023-12-02 16:24:41,270 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 68 treesize of output 53 [2023-12-02 16:24:41,387 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 68 treesize of output 53 [2023-12-02 16:24:41,472 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 68 treesize of output 53 [2023-12-02 16:24:41,533 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 87 treesize of output 33 [2023-12-02 16:24:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-02 16:24:41,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:41,720 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array (_ BitVec 32) (_ BitVec 32)))) (not (fp.geq (let ((.cse0 (select (select (store |c_#memory_int| |c_~#signed_short_int_Array_0~0.base| v_ArrVal_252) |c_~#float_Array_0~0.base|) (bvadd (_ bv8 32) |c_~#float_Array_0~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (/ 252.0 5.0))))) is different from false [2023-12-02 16:24:42,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917272208] [2023-12-02 16:24:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917272208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1528687303] [2023-12-02 16:24:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:42,137 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:24:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:24:42,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:24:42,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 16:24:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:42,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 16:24:42,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:43,213 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 16:24:44,505 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 67 treesize of output 52 [2023-12-02 16:24:44,817 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 67 treesize of output 52 [2023-12-02 16:24:45,125 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 67 treesize of output 52 [2023-12-02 16:24:45,462 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 67 treesize of output 52 [2023-12-02 16:24:45,795 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 67 treesize of output 52 [2023-12-02 16:24:46,089 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 67 treesize of output 52 [2023-12-02 16:24:46,426 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 67 treesize of output 52 [2023-12-02 16:24:46,839 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 68 treesize of output 53 [2023-12-02 16:24:46,947 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 68 treesize of output 53 [2023-12-02 16:24:46,993 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 68 treesize of output 53 [2023-12-02 16:24:47,010 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 87 treesize of output 33 [2023-12-02 16:24:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-02 16:24:47,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:47,089 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_290 (Array (_ BitVec 32) (_ BitVec 32)))) (not (fp.geq (let ((.cse0 (select (select (store |c_#memory_int| |c_~#signed_short_int_Array_0~0.base| v_ArrVal_290) |c_~#float_Array_0~0.base|) (bvadd (_ bv8 32) |c_~#float_Array_0~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (/ 252.0 5.0))))) is different from false [2023-12-02 16:24:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1528687303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278254630] [2023-12-02 16:24:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:47,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:47,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:47,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:47,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:24:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:47,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 16:24:47,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:48,124 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 16:24:48,533 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 67 treesize of output 52 [2023-12-02 16:24:48,884 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 67 treesize of output 52 [2023-12-02 16:24:49,198 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 67 treesize of output 52 [2023-12-02 16:24:49,515 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 67 treesize of output 52 [2023-12-02 16:24:49,834 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 67 treesize of output 52 [2023-12-02 16:24:50,139 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 67 treesize of output 52 [2023-12-02 16:24:50,446 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 67 treesize of output 52 [2023-12-02 16:24:50,815 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 68 treesize of output 53 [2023-12-02 16:24:50,917 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 68 treesize of output 53 [2023-12-02 16:24:50,956 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 68 treesize of output 53 [2023-12-02 16:24:50,971 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 87 treesize of output 33 [2023-12-02 16:24:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 134 proven. 42 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-02 16:24:51,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:51,274 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_327 (Array (_ BitVec 32) (_ BitVec 32)))) (not (fp.geq (let ((.cse0 (select (select (store (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_326) |c_~#signed_short_int_Array_0~0.base| v_ArrVal_327) |c_~#float_Array_0~0.base|) (bvadd (_ bv8 32) |c_~#float_Array_0~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (/ 252.0 5.0))))) is different from false [2023-12-02 16:24:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278254630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:51,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:24:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 22 [2023-12-02 16:24:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213468430] [2023-12-02 16:24:51,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:24:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 16:24:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 16:24:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=886, Unknown=42, NotChecked=198, Total=1332 [2023-12-02 16:24:51,646 INFO L87 Difference]: Start difference. First operand 335 states and 483 transitions. Second operand has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:25:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:01,643 INFO L93 Difference]: Finished difference Result 1151 states and 1657 transitions. [2023-12-02 16:25:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 16:25:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18) Word has length 137 [2023-12-02 16:25:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:01,649 INFO L225 Difference]: With dead ends: 1151 [2023-12-02 16:25:01,649 INFO L226 Difference]: Without dead ends: 817 [2023-12-02 16:25:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 441 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=426, Invalid=1800, Unknown=42, NotChecked=282, Total=2550 [2023-12-02 16:25:01,652 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 877 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:01,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 637 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-12-02 16:25:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-02 16:25:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 627. [2023-12-02 16:25:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 565 states have (on average 1.4123893805309735) internal successors, (798), 568 states have internal predecessors, (798), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (53), 50 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 16:25:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 904 transitions. [2023-12-02 16:25:01,704 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 904 transitions. Word has length 137 [2023-12-02 16:25:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:01,704 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 904 transitions. [2023-12-02 16:25:01,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:25:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 904 transitions. [2023-12-02 16:25:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 16:25:01,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:01,708 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:01,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 16:25:01,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 16:25:02,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 16:25:02,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:02,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:02,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1250554073, now seen corresponding path program 1 times [2023-12-02 16:25:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:02,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557892660] [2023-12-02 16:25:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:02,310 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 16:25:02,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:02,311 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:02,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:02,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:25:02,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-02 16:25:02,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:25:02,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:25:02,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557892660] [2023-12-02 16:25:02,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557892660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:02,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:02,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:25:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373289633] [2023-12-02 16:25:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:02,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:25:02,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:25:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:25:02,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:25:02,539 INFO L87 Difference]: Start difference. First operand 627 states and 904 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 16:25:02,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:02,741 INFO L93 Difference]: Finished difference Result 1092 states and 1567 transitions. [2023-12-02 16:25:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:25:02,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 137 [2023-12-02 16:25:02,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:02,745 INFO L225 Difference]: With dead ends: 1092 [2023-12-02 16:25:02,745 INFO L226 Difference]: Without dead ends: 460 [2023-12-02 16:25:02,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:25:02,747 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 6 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:02,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 703 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:25:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-02 16:25:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2023-12-02 16:25:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 413 states have (on average 1.4067796610169492) internal successors, (581), 415 states have internal predecessors, (581), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:25:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 653 transitions. [2023-12-02 16:25:02,778 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 653 transitions. Word has length 137 [2023-12-02 16:25:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:02,779 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 653 transitions. [2023-12-02 16:25:02,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 16:25:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 653 transitions. [2023-12-02 16:25:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:25:02,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:02,781 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:02,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:02,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:02,982 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:02,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 369372268, now seen corresponding path program 1 times [2023-12-02 16:25:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160745266] [2023-12-02 16:25:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:02,984 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 16:25:02,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:02,985 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:02,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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)] Waiting until timeout for monitored process [2023-12-02 16:25:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:03,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:25:03,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:03,605 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 16:25:03,656 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 16:25:03,777 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 30 treesize of output 14 [2023-12-02 16:25:03,873 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 19 treesize of output 14 [2023-12-02 16:25:03,979 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 19 treesize of output 14 [2023-12-02 16:25:04,082 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 19 treesize of output 14 [2023-12-02 16:25:04,172 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 19 treesize of output 14 [2023-12-02 16:25:04,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:04,311 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 32 treesize of output 34 [2023-12-02 16:25:04,400 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 36 treesize of output 27 [2023-12-02 16:25:04,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:04,465 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 47 treesize of output 55 [2023-12-02 16:25:04,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:04,613 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 91 treesize of output 39 [2023-12-02 16:25:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-02 16:25:04,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:25:04,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:25:04,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160745266] [2023-12-02 16:25:04,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160745266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:04,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:04,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 16:25:04,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847284674] [2023-12-02 16:25:04,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:25:04,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:25:04,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:25:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:25:04,674 INFO L87 Difference]: Start difference. First operand 456 states and 653 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:25:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:09,250 INFO L93 Difference]: Finished difference Result 1430 states and 2053 transitions. [2023-12-02 16:25:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 16:25:09,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-02 16:25:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:09,256 INFO L225 Difference]: With dead ends: 1430 [2023-12-02 16:25:09,256 INFO L226 Difference]: Without dead ends: 975 [2023-12-02 16:25:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2023-12-02 16:25:09,257 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1040 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:09,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 574 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 16:25:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-02 16:25:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 462. [2023-12-02 16:25:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 419 states have (on average 1.4081145584725536) internal successors, (590), 421 states have internal predecessors, (590), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:25:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 662 transitions. [2023-12-02 16:25:09,283 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 662 transitions. Word has length 138 [2023-12-02 16:25:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:09,284 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 662 transitions. [2023-12-02 16:25:09,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:25:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 662 transitions. [2023-12-02 16:25:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:25:09,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:09,285 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:09,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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)] Ended with exit code 0 [2023-12-02 16:25:09,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:09,486 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -23654742, now seen corresponding path program 1 times [2023-12-02 16:25:09,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:09,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684548634] [2023-12-02 16:25:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:09,487 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 16:25:09,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:09,488 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:25:09,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 (14)] Waiting until timeout for monitored process [2023-12-02 16:29:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:33,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 16:29:33,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:33,447 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 16:29:33,906 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 69 treesize of output 54 [2023-12-02 16:29:34,259 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 69 treesize of output 54 [2023-12-02 16:29:34,588 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 69 treesize of output 54 [2023-12-02 16:29:34,942 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 69 treesize of output 54 [2023-12-02 16:29:35,309 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 69 treesize of output 54 [2023-12-02 16:29:35,641 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 69 treesize of output 54 [2023-12-02 16:29:35,974 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 69 treesize of output 54 [2023-12-02 16:29:36,547 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 141 treesize of output 108 [2023-12-02 16:29:44,487 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 141 treesize of output 108 [2023-12-02 16:29:49,038 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 141 treesize of output 108 [2023-12-02 16:29:56,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:56,354 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 208 treesize of output 76 [2023-12-02 16:29:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-02 16:29:58,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:29:58,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:29:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684548634] [2023-12-02 16:29:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684548634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:29:58,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:29:58,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 16:29:58,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227805585] [2023-12-02 16:29:58,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:29:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:29:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:29:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:29:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:29:58,483 INFO L87 Difference]: Start difference. First operand 462 states and 662 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:30:48,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:54,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:30:57,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:05,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:07,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:09,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:11,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:13,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:15,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:18,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:20,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:31:29,753 WARN L293 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:32:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:02,930 INFO L93 Difference]: Finished difference Result 1005 states and 1437 transitions. [2023-12-02 16:32:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:32:02,932 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-02 16:32:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:02,935 INFO L225 Difference]: With dead ends: 1005 [2023-12-02 16:32:02,935 INFO L226 Difference]: Without dead ends: 544 [2023-12-02 16:32:02,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:32:02,936 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 424 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 17 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:02,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 848 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2563 Invalid, 10 Unknown, 0 Unchecked, 115.7s Time] [2023-12-02 16:32:02,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-02 16:32:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 480. [2023-12-02 16:32:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 437 states have (on average 1.4096109839816933) internal successors, (616), 439 states have internal predecessors, (616), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:32:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 688 transitions. [2023-12-02 16:32:02,969 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 688 transitions. Word has length 138 [2023-12-02 16:32:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:02,969 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 688 transitions. [2023-12-02 16:32:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:32:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 688 transitions. [2023-12-02 16:32:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:32:02,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:02,972 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:02,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 (14)] Ended with exit code 0 [2023-12-02 16:32:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:32:03,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:32:03,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 588226986, now seen corresponding path program 1 times [2023-12-02 16:32:03,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:32:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649865197] [2023-12-02 16:32:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:03,177 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 16:32:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:32:03,178 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:32:03,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:34:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:31,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 16:34:31,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:32,289 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 16:34:33,045 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 69 treesize of output 54 [2023-12-02 16:34:33,552 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 69 treesize of output 54 [2023-12-02 16:34:34,036 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 69 treesize of output 54 [2023-12-02 16:34:34,573 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 69 treesize of output 54 [2023-12-02 16:34:35,150 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 69 treesize of output 54 [2023-12-02 16:34:35,667 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 69 treesize of output 54 [2023-12-02 16:34:36,165 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 69 treesize of output 54 [2023-12-02 16:34:37,053 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 142 treesize of output 109 [2023-12-02 16:34:44,293 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 142 treesize of output 109 [2023-12-02 16:34:48,022 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 142 treesize of output 109 [2023-12-02 16:34:53,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:34:53,351 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 209 treesize of output 77 [2023-12-02 16:34:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2023-12-02 16:34:55,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:34:55,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:34:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649865197] [2023-12-02 16:34:55,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649865197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:55,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:55,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 16:34:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976082332] [2023-12-02 16:34:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:55,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:34:55,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:34:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:34:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:34:55,665 INFO L87 Difference]: Start difference. First operand 480 states and 688 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:36:23,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:41,507 WARN L539 Checker$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 [] [2023-12-02 16:36:51,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:53,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:36:59,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:01,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:03,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:05,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:07,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:09,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:12,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:14,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:16,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:28,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:37:54,520 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 [] [2023-12-02 16:38:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:02,421 INFO L93 Difference]: Finished difference Result 999 states and 1429 transitions. [2023-12-02 16:38:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:38:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-02 16:38:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:02,429 INFO L225 Difference]: With dead ends: 999 [2023-12-02 16:38:02,430 INFO L226 Difference]: Without dead ends: 520 [2023-12-02 16:38:02,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:38:02,431 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 361 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 17 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:02,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 804 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2625 Invalid, 12 Unknown, 0 Unchecked, 180.2s Time] [2023-12-02 16:38:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-02 16:38:02,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 481. [2023-12-02 16:38:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 438 states have (on average 1.408675799086758) internal successors, (617), 440 states have internal predecessors, (617), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:38:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 689 transitions. [2023-12-02 16:38:02,463 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 689 transitions. Word has length 138 [2023-12-02 16:38:02,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:02,464 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 689 transitions. [2023-12-02 16:38:02,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 16:38:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 689 transitions. [2023-12-02 16:38:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:38:02,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:02,466 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:02,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:02,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:02,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 195199976, now seen corresponding path program 1 times [2023-12-02 16:38:02,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:38:02,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545060182] [2023-12-02 16:38:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:02,681 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 16:38:02,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:38:02,682 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:02,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:03,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:38:03,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:03,878 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 16:38:03,952 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 19 treesize of output 14 [2023-12-02 16:38:03,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:03,991 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 30 treesize of output 32 [2023-12-02 16:38:04,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:04,114 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 58 treesize of output 30 [2023-12-02 16:38:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:38:04,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:04,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:38:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545060182] [2023-12-02 16:38:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545060182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:04,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:04,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:38:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085191361] [2023-12-02 16:38:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:38:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:38:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:38:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:38:04,196 INFO L87 Difference]: Start difference. First operand 481 states and 689 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:38:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:08,312 INFO L93 Difference]: Finished difference Result 1337 states and 1913 transitions. [2023-12-02 16:38:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:38:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-02 16:38:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:08,317 INFO L225 Difference]: With dead ends: 1337 [2023-12-02 16:38:08,317 INFO L226 Difference]: Without dead ends: 857 [2023-12-02 16:38:08,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:38:08,319 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 636 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 670 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 16:38:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-02 16:38:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 481. [2023-12-02 16:38:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 438 states have (on average 1.408675799086758) internal successors, (617), 440 states have internal predecessors, (617), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:38:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 689 transitions. [2023-12-02 16:38:08,342 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 689 transitions. Word has length 138 [2023-12-02 16:38:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:08,342 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 689 transitions. [2023-12-02 16:38:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:38:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 689 transitions. [2023-12-02 16:38:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:38:08,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:08,344 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:08,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:08,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:08,545 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:08,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1816971430, now seen corresponding path program 1 times [2023-12-02 16:38:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:38:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903687285] [2023-12-02 16:38:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:08,546 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 16:38:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:38:08,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:08,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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)] Waiting until timeout for monitored process [2023-12-02 16:38:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:09,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:38:09,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:09,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:09,090 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 33 treesize of output 29 [2023-12-02 16:38:09,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:09,137 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 43 treesize of output 13 [2023-12-02 16:38:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:38:09,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:09,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:38:09,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903687285] [2023-12-02 16:38:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903687285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:09,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:38:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304371219] [2023-12-02 16:38:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:09,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:38:09,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:38:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:38:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:38:09,182 INFO L87 Difference]: Start difference. First operand 481 states and 689 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:38:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:38:11,060 INFO L93 Difference]: Finished difference Result 988 states and 1413 transitions. [2023-12-02 16:38:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:38:11,061 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 138 [2023-12-02 16:38:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:38:11,064 INFO L225 Difference]: With dead ends: 988 [2023-12-02 16:38:11,064 INFO L226 Difference]: Without dead ends: 508 [2023-12-02 16:38:11,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 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 16:38:11,066 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:38:11,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 556 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 16:38:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-02 16:38:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2023-12-02 16:38:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 465 states have (on average 1.3849462365591398) internal successors, (644), 467 states have internal predecessors, (644), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-02 16:38:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 716 transitions. [2023-12-02 16:38:11,086 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 716 transitions. Word has length 138 [2023-12-02 16:38:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:38:11,086 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 716 transitions. [2023-12-02 16:38:11,087 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-02 16:38:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 716 transitions. [2023-12-02 16:38:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 16:38:11,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:38:11,088 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:11,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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)] Ended with exit code 0 [2023-12-02 16:38:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:11,289 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:38:11,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:38:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash 789052124, now seen corresponding path program 1 times [2023-12-02 16:38:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:38:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519232673] [2023-12-02 16:38:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:38:11,290 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 16:38:11,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:38:11,291 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 16:38:11,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c28df5-846e-403b-ae73-0fbc653bc594/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 (18)] Waiting until timeout for monitored process [2023-12-02 16:38:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:38:11,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:38:11,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:38:11,926 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 17 treesize of output 17 [2023-12-02 16:38:11,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:38:11,948 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 30 treesize of output 10 [2023-12-02 16:38:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-02 16:38:11,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:38:11,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:38:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519232673] [2023-12-02 16:38:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519232673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:38:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:38:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698002118] [2023-12-02 16:38:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:38:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:38:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:38:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:38:11,969 INFO L87 Difference]: Start difference. First operand 508 states and 716 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17)