./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2 --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 b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:33,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:33,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:33:33,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:33,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:33,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:33,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:33,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:33,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:33,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:33,167 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:33,167 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:33,167 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:33,168 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:33,170 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:33,170 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:33,172 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:33,175 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:33,176 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:33,176 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:33,176 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:33,179 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:33,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:33,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:33:33,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:33,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:33,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:33,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:33,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:33:33,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:33,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:33:33,184 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:33,184 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:33,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:33:33,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:33,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:33,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:33,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:33,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:33,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:33,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:33,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:33:33,187 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:33,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:33,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:33,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:33,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:33,188 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2024-11-02 12:33:33,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:33,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:33,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:33,470 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:33,470 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:33,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c Unable to find full path for "g++" [2024-11-02 12:33:35,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:35,793 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:35,794 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2024-11-02 12:33:35,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/3ca2deffb/47576fd3497c441688d6249e93d91e81/FLAG1da7b41d9 [2024-11-02 12:33:35,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/3ca2deffb/47576fd3497c441688d6249e93d91e81 [2024-11-02 12:33:35,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:35,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:35,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:35,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:35,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:35,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:35" (1/1) ... [2024-11-02 12:33:35,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dad84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:35, skipping insertion in model container [2024-11-02 12:33:35,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:35" (1/1) ... [2024-11-02 12:33:35,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:36,092 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2024-11-02 12:33:36,105 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2024-11-02 12:33:36,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:36,127 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:36,147 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2024-11-02 12:33:36,154 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2024-11-02 12:33:36,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:36,181 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:36,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36 WrapperNode [2024-11-02 12:33:36,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:36,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:36,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:36,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:36,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,222 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 161 [2024-11-02 12:33:36,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:36,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:36,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:36,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:36,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:36,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:36,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:36,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:36,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (1/1) ... [2024-11-02 12:33:36,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:36,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:36,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:33:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:33:36,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:36,384 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:36,386 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:36,618 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:36,618 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:36,693 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:36,693 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:33:36,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:36 BoogieIcfgContainer [2024-11-02 12:33:36,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:36,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:36,697 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:36,700 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:36,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:35" (1/3) ... [2024-11-02 12:33:36,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed67820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:36, skipping insertion in model container [2024-11-02 12:33:36,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:36" (2/3) ... [2024-11-02 12:33:36,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed67820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:36, skipping insertion in model container [2024-11-02 12:33:36,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:36" (3/3) ... [2024-11-02 12:33:36,708 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2024-11-02 12:33:36,730 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:36,730 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:33:36,796 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:36,803 INFO L333 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, 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;@7d4cb5a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:36,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:33:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:33:36,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:36,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:36,818 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:36,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash 317254506, now seen corresponding path program 1 times [2024-11-02 12:33:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795962836] [2024-11-02 12:33:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:33:36,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:33:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:33:37,022 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:33:37,024 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:33:37,029 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-02 12:33:37,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-02 12:33:37,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:33:37,038 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:33:37,065 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:33:37,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:33:37 BoogieIcfgContainer [2024-11-02 12:33:37,068 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:33:37,069 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:33:37,069 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:33:37,069 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:33:37,070 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:36" (3/4) ... [2024-11-02 12:33:37,073 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:33:37,074 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:33:37,074 INFO L158 Benchmark]: Toolchain (without parser) took 1254.32ms. Allocated memory is still 165.7MB. Free memory was 124.0MB in the beginning and 130.6MB in the end (delta: -6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:37,075 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 113.2MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:37,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.42ms. Allocated memory is still 165.7MB. Free memory was 124.0MB in the beginning and 109.8MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:33:37,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.20ms. Allocated memory is still 165.7MB. Free memory was 109.8MB in the beginning and 107.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:33:37,077 INFO L158 Benchmark]: Boogie Preprocessor took 32.19ms. Allocated memory is still 165.7MB. Free memory was 107.8MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:37,077 INFO L158 Benchmark]: RCFGBuilder took 436.81ms. Allocated memory is still 165.7MB. Free memory was 106.3MB in the beginning and 90.5MB in the end (delta: 15.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-02 12:33:37,078 INFO L158 Benchmark]: TraceAbstraction took 371.94ms. Allocated memory is still 165.7MB. Free memory was 89.6MB in the beginning and 130.6MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:37,078 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 165.7MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:37,081 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 113.2MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.42ms. Allocated memory is still 165.7MB. Free memory was 124.0MB in the beginning and 109.8MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.20ms. Allocated memory is still 165.7MB. Free memory was 109.8MB in the beginning and 107.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.19ms. Allocated memory is still 165.7MB. Free memory was 107.8MB in the beginning and 106.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 436.81ms. Allocated memory is still 165.7MB. Free memory was 106.3MB in the beginning and 90.5MB in the end (delta: 15.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 371.94ms. Allocated memory is still 165.7MB. Free memory was 89.6MB in the beginning and 130.6MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 165.7MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 67]: 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 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_160_0; [L13] int __tmp_160_1; [L14] int __tmp_160_2; [L15] int __return_165; [L18] float main__X; [L19] float main__Y; [L20] float main__S; [L21] float main__R; [L22] float main__D; [L23] int main__i; [L24] main__Y = 0 [L25] main__i = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L26] COND TRUE main__i < 100000 [L28] main__X = __VERIFIER_nondet_float() [L29] main__D = __VERIFIER_nondet_float() [L30] int main____CPAchecker_TMP_0; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L31] COND TRUE main__X >= -128.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L33] COND TRUE main__X <= 128.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__i=0] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__i=0] [L39] COND TRUE main__D >= 0.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__i=0] [L41] COND TRUE main__D <= 16.0 [L43] main____CPAchecker_TMP_1 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__i=0] [L44] COND TRUE main____CPAchecker_TMP_1 != 0 [L46] main__S = main__Y [L47] main__Y = main__X [L48] main__R = main__X - main__S [L49] COND TRUE main__R <= (-main__D) [L51] main__Y = main__S - main__D [L53] int main____CPAchecker_TMP_2; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__i=0] [L54] COND FALSE !(main__Y >= -129.0) VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__i=0] [L205] main____CPAchecker_TMP_2 = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__i=0] [L61] int __tmp_1; [L62] __tmp_1 = main____CPAchecker_TMP_2 [L63] int __VERIFIER_assert__cond; [L64] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__i=0] [L65] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__i=0] [L67] reach_error() VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__Y=53, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__i=0] - UnprovableResult [Line: 123]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 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 [2024-11-02 12:33:37,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/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_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2 --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 b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:39,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:39,664 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-02 12:33:39,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:39,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:39,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:39,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:39,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:39,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:39,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:39,715 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:39,715 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:39,716 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:39,716 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:39,716 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:39,717 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:39,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:39,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:33:39,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:39,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:39,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:39,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:33:39,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:39,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:33:39,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:33:39,726 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:33:39,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:39,726 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:33:39,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:39,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:33:39,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:39,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:39,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:33:39,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:39,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:39,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:39,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:39,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:39,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:33:39,730 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:33:39,730 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:33:39,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:39,733 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:39,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:39,733 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2024-11-02 12:33:40,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:40,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:40,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:40,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:40,175 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:40,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c Unable to find full path for "g++" [2024-11-02 12:33:42,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:42,705 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:42,707 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2024-11-02 12:33:42,716 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/08e81cea5/26bf1f200ccb4beaa88181a961d41e98/FLAGc8f5352f9 [2024-11-02 12:33:42,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/data/08e81cea5/26bf1f200ccb4beaa88181a961d41e98 [2024-11-02 12:33:42,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:42,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:42,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:42,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:42,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:42,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:42" (1/1) ... [2024-11-02 12:33:42,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb3f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:42, skipping insertion in model container [2024-11-02 12:33:42,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:42" (1/1) ... [2024-11-02 12:33:42,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:43,055 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2024-11-02 12:33:43,075 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2024-11-02 12:33:43,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:43,114 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:43,140 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2024-11-02 12:33:43,151 WARN L251 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_b77861f5-cdae-4fec-ba27-2059ed268cb4/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2024-11-02 12:33:43,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:43,195 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:43,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43 WrapperNode [2024-11-02 12:33:43,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:43,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:43,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:43,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:43,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,249 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 162 [2024-11-02 12:33:43,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:43,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:43,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:43,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:43,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:43,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:43,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:43,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:43,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (1/1) ... [2024-11-02 12:33:43,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:43,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:43,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:33:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:33:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:43,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:43,467 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:46,176 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:46,177 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:46,217 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:46,218 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:33:46,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:46 BoogieIcfgContainer [2024-11-02 12:33:46,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:46,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:46,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:46,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:46,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:42" (1/3) ... [2024-11-02 12:33:46,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f0b26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:46, skipping insertion in model container [2024-11-02 12:33:46,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:43" (2/3) ... [2024-11-02 12:33:46,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f0b26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:46, skipping insertion in model container [2024-11-02 12:33:46,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:46" (3/3) ... [2024-11-02 12:33:46,233 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2024-11-02 12:33:46,253 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:46,253 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:33:46,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:46,356 INFO L333 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, 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;@34323c36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:46,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:33:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:46,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:33:46,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:46,369 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:46,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:33:46,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:46,383 INFO L85 PathProgramCache]: Analyzing trace with hash 346658074, now seen corresponding path program 1 times [2024-11-02 12:33:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219776693] [2024-11-02 12:33:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:46,398 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 [2024-11-02 12:33:46,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:46,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:46,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b77861f5-cdae-4fec-ba27-2059ed268cb4/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:46,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:33:46,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:54,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:54,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219776693] [2024-11-02 12:33:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219776693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:54,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:54,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:33:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611306831] [2024-11-02 12:33:54,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:54,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:33:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:33:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=22, Unknown=2, NotChecked=0, Total=42 [2024-11-02 12:33:54,771 INFO L87 Difference]: Start difference. First operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:59,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:34:03,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:34:05,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:34:08,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:34:13,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:34:15,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]