./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:01,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:01,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:06:01,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:01,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:01,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:01,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:01,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:01,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:01,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:01,699 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:01,699 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:01,700 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:01,704 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:06:01,704 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:01,705 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:01,705 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:06:01,706 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:06:01,706 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:01,707 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:06:01,707 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:06:01,709 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:06:01,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:01,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:06:01,711 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:01,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:06:01,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:01,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:01,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:06:01,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:01,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:06:01,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:01,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:06:01,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:01,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:01,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:01,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:01,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:01,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:01,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:06:01,717 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:06:01,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:06:01,718 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:06:01,718 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:01,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:01,718 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2023-11-06 21:06:02,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:02,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:02,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:02,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:02,110 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:02,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2023-11-06 21:06:05,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:05,457 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:05,458 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i [2023-11-06 21:06:05,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/9fe65369d/67b73364b718488f8bfa9e8075a53dc0/FLAGb48dc9d38 [2023-11-06 21:06:05,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/9fe65369d/67b73364b718488f8bfa9e8075a53dc0 [2023-11-06 21:06:05,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:05,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:05,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:05,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:05,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:05,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b8ca5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05, skipping insertion in model container [2023-11-06 21:06:05,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:06:05,673 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2023-11-06 21:06:05,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:05,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:06:05,702 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2023-11-06 21:06:05,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:05,718 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:06:05,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05 WrapperNode [2023-11-06 21:06:05,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:05,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:05,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:06:05,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:06:05,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,751 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-06 21:06:05,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:05,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:06:05,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:06:05,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:06:05,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:06:05,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:06:05,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:06:05,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:06:05,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (1/1) ... [2023-11-06 21:06:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:05,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:06:05,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:06:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:06:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:06:05,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:06:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:06:05,913 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:06:05,915 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:06:06,052 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:06:06,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:06:06,128 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:06:06,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:06 BoogieIcfgContainer [2023-11-06 21:06:06,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:06:06,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:06:06,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:06:06,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:06:06,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:06:05" (1/3) ... [2023-11-06 21:06:06,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25798ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:06, skipping insertion in model container [2023-11-06 21:06:06,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:05" (2/3) ... [2023-11-06 21:06:06,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25798ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:06, skipping insertion in model container [2023-11-06 21:06:06,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:06" (3/3) ... [2023-11-06 21:06:06,142 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2.i [2023-11-06 21:06:06,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:06:06,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:06:06,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:06:06,205 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=LoopsAndPotentialCycles, 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;@1bbdc0f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:06:06,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:06:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 21:06:06,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:06,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 21:06:06,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:06:06,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2023-11-06 21:06:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347273849] [2023-11-06 21:06:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:06:06,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:06:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:06:06,362 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 21:06:06,364 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:06:06,366 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:06:06,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:06:06,373 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 21:06:06,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:06:06,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:06:06 BoogieIcfgContainer [2023-11-06 21:06:06,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:06:06,395 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:06:06,395 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:06:06,395 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:06:06,396 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:06" (3/4) ... [2023-11-06 21:06:06,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:06:06,399 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:06:06,401 INFO L158 Benchmark]: Toolchain (without parser) took 915.80ms. Allocated memory is still 153.1MB. Free memory was 119.2MB in the beginning and 107.9MB in the end (delta: 11.3MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-06 21:06:06,401 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:06,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.23ms. Allocated memory is still 153.1MB. Free memory was 119.2MB in the beginning and 108.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:06:06,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.56ms. Allocated memory is still 153.1MB. Free memory was 108.6MB in the beginning and 107.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:06,403 INFO L158 Benchmark]: Boogie Preprocessor took 16.90ms. Allocated memory is still 153.1MB. Free memory was 107.4MB in the beginning and 106.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:06:06,404 INFO L158 Benchmark]: RCFGBuilder took 362.73ms. Allocated memory is still 153.1MB. Free memory was 106.0MB in the beginning and 121.8MB in the end (delta: -15.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:06:06,405 INFO L158 Benchmark]: TraceAbstraction took 259.26ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 108.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:06:06,405 INFO L158 Benchmark]: Witness Printer took 4.70ms. Allocated memory is still 153.1MB. Free memory was 108.4MB in the beginning and 107.9MB in the end (delta: 428.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:06:06,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.23ms. Allocated memory is still 153.1MB. Free memory was 119.2MB in the beginning and 108.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.56ms. Allocated memory is still 153.1MB. Free memory was 108.6MB in the beginning and 107.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.90ms. Allocated memory is still 153.1MB. Free memory was 107.4MB in the beginning and 106.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.73ms. Allocated memory is still 153.1MB. Free memory was 106.0MB in the beginning and 121.8MB in the end (delta: -15.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 259.26ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 108.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.70ms. Allocated memory is still 153.1MB. Free memory was 108.4MB in the beginning and 107.9MB in the end (delta: 428.4kB). 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: 38]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L32] float x = IN; [L34-L35] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L37] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=53, x=53] [L38] reach_error() VAL [IN=53, x=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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 [2023-11-06 21:06:06,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:06:09,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:09,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-06 21:06:09,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:09,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:09,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:09,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:09,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:09,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:09,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:09,296 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:09,297 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:09,297 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:09,299 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:09,299 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:09,299 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:09,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:09,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:06:09,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:09,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:09,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:09,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:06:09,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:09,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:06:09,304 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:06:09,304 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:06:09,305 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:06:09,305 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:09,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:06:09,306 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:09,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:09,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:06:09,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:09,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:09,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:09,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:09,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:06:09,310 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:06:09,310 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:06:09,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:06:09,311 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:09,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:09,312 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6cb7e7408af12d21fe6db26ed13525a6aeea3116434a553f8758caff4c6db4 [2023-11-06 21:06:09,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:09,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:09,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:09,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:09,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:09,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/floats-cdfpl/square_2.i [2023-11-06 21:06:13,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:13,363 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:13,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i [2023-11-06 21:06:13,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/1723d00b1/43773a05769f4b3e86cca9d7181f541c/FLAGe2ed1a07d [2023-11-06 21:06:13,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/data/1723d00b1/43773a05769f4b3e86cca9d7181f541c [2023-11-06 21:06:13,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:13,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:13,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:13,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:13,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:13,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2193c927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13, skipping insertion in model container [2023-11-06 21:06:13,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,444 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:06:13,654 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2023-11-06 21:06:13,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:13,673 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:06:13,690 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_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/sv-benchmarks/c/floats-cdfpl/square_2.i[1627,1640] [2023-11-06 21:06:13,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:13,707 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:06:13,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13 WrapperNode [2023-11-06 21:06:13,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:13,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:13,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:06:13,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:06:13,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,753 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2023-11-06 21:06:13,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:13,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:06:13,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:06:13,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:06:13,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:06:13,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:06:13,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:06:13,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:06:13,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (1/1) ... [2023-11-06 21:06:13,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:13,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:06:13,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:06:13,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:06:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:06:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:06:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:06:13,957 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:06:13,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:06:16,236 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:06:16,242 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:06:16,242 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:06:16,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:16 BoogieIcfgContainer [2023-11-06 21:06:16,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:06:16,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:06:16,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:06:16,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:06:16,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:06:13" (1/3) ... [2023-11-06 21:06:16,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:16, skipping insertion in model container [2023-11-06 21:06:16,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:13" (2/3) ... [2023-11-06 21:06:16,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:16, skipping insertion in model container [2023-11-06 21:06:16,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:16" (3/3) ... [2023-11-06 21:06:16,254 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2.i [2023-11-06 21:06:16,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:06:16,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:06:16,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:06:16,333 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=LoopsAndPotentialCycles, 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;@7656171f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:06:16,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:06:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:06:16,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:16,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:06:16,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:06:16,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2023-11-06 21:06:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:06:16,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115154956] [2023-11-06 21:06:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:16,365 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 [2023-11-06 21:06:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:06:16,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:06:16,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:06:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:16,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:06:16,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:06:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:16,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:06:16,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:06:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115154956] [2023-11-06 21:06:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115154956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:06:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973401633] [2023-11-06 21:06:16,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:06:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:06:16,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:06:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:06:16,990 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:17,007 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-06 21:06:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:06:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 21:06:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:17,017 INFO L225 Difference]: With dead ends: 19 [2023-11-06 21:06:17,017 INFO L226 Difference]: Without dead ends: 7 [2023-11-06 21:06:17,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:06:17,024 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:17,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:06:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-06 21:06:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-06 21:06:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2023-11-06 21:06:17,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2023-11-06 21:06:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:17,049 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2023-11-06 21:06:17,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2023-11-06 21:06:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:06:17,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:17,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:06:17,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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)] Ended with exit code 0 [2023-11-06 21:06:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:06:17,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:06:17,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2023-11-06 21:06:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:06:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570478745] [2023-11-06 21:06:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:17,256 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 [2023-11-06 21:06:17,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:06:17,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 21:06:17,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be5f7c-6099-4028-b1fc-c7bc90ad50ed/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 21:06:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:06:41,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.