./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:50:01,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:50:02,063 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:50:02,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:50:02,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:50:02,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:50:02,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:50:02,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:50:02,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:50:02,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:50:02,106 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:50:02,106 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:50:02,106 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:50:02,106 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:50:02,106 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:50:02,107 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:50:02,107 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:50:02,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:50:02,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:50:02,108 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:50:02,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:50:02,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:50:02,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:50:02,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:50:02,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:50:02,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:50:02,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:50:02,114 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E 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 -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2024-11-14 02:50:02,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:50:02,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:50:02,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:50:02,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:50:02,486 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:50:02,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/float-benchs/water_pid.c Unable to find full path for "g++" [2024-11-14 02:50:04,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:50:05,099 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:50:05,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c [2024-11-14 02:50:05,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/ba588cdf7/f5dee313902a48c3a1b61e306d5a4684/FLAGd5870f1e7 [2024-11-14 02:50:05,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/ba588cdf7/f5dee313902a48c3a1b61e306d5a4684 [2024-11-14 02:50:05,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:50:05,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:50:05,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:50:05,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:50:05,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:50:05,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bffcc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05, skipping insertion in model container [2024-11-14 02:50:05,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:50:05,603 WARN L250 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_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-11-14 02:50:05,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:50:05,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:50:05,642 WARN L250 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_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-11-14 02:50:05,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:50:05,660 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:50:05,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05 WrapperNode [2024-11-14 02:50:05,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:50:05,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:50:05,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:50:05,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:50:05,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,704 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-14 02:50:05,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:50:05,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:50:05,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:50:05,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:50:05,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:50:05,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:50:05,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:50:05,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:50:05,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (1/1) ... [2024-11-14 02:50:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:50:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:50:05,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:50:05,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:50:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:50:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure y [2024-11-14 02:50:05,840 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2024-11-14 02:50:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:50:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:50:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:50:05,929 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:50:05,930 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:50:06,052 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-14 02:50:06,053 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:50:06,097 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:50:06,097 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:50:06,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:50:06 BoogieIcfgContainer [2024-11-14 02:50:06,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:50:06,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:50:06,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:50:06,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:50:06,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:50:05" (1/3) ... [2024-11-14 02:50:06,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dba7dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:50:06, skipping insertion in model container [2024-11-14 02:50:06,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:05" (2/3) ... [2024-11-14 02:50:06,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dba7dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:50:06, skipping insertion in model container [2024-11-14 02:50:06,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:50:06" (3/3) ... [2024-11-14 02:50:06,109 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2024-11-14 02:50:06,130 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:50:06,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG water_pid.c that has 2 procedures, 13 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:50:06,201 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:50:06,216 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;@5551b677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:50:06,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:50:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:50:06,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:50:06,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:50:06,231 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:50:06,232 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:50:06,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:50:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash 725843438, now seen corresponding path program 1 times [2024-11-14 02:50:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:50:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783315298] [2024-11-14 02:50:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:50:06,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:50:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:50:06,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:50:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:50:06,435 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 02:50:06,437 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 02:50:06,439 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 02:50:06,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:50:06,448 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 02:50:06,484 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 02:50:06,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 02:50:06 BoogieIcfgContainer [2024-11-14 02:50:06,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 02:50:06,491 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 02:50:06,491 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 02:50:06,491 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 02:50:06,492 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:50:06" (3/4) ... [2024-11-14 02:50:06,495 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 02:50:06,496 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 02:50:06,501 INFO L158 Benchmark]: Toolchain (without parser) took 1099.01ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 55.8MB in the end (delta: 37.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-14 02:50:06,501 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:50:06,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.24ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:50:06,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.37ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:50:06,502 INFO L158 Benchmark]: Boogie Preprocessor took 33.77ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.9MB in the end (delta: 733.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:50:06,503 INFO L158 Benchmark]: RCFGBuilder took 356.85ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 69.4MB in the end (delta: 10.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:50:06,503 INFO L158 Benchmark]: TraceAbstraction took 389.03ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 56.0MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:50:06,504 INFO L158 Benchmark]: Witness Printer took 5.78ms. Allocated memory is still 117.4MB. Free memory was 56.0MB in the beginning and 55.8MB in the end (delta: 232.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:50:06,509 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.24ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.8MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.37ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.77ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.9MB in the end (delta: 733.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.85ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 69.4MB in the end (delta: 10.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 389.03ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 56.0MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 5.78ms. Allocated memory is still 117.4MB. Free memory was 56.0MB in the beginning and 55.8MB in the end (delta: 232.8kB). 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: 8]: 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 someBinaryArithmeticDOUBLEoperation at line 37, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of to_real at line 12. Possible FailurePath: [L12] static NUM yn = 0; [L14] NUM ui = 0; [L24] NUM yi, yc; [L25] NUM K; [L26] NUM T; [L27] NUM taui; [L28] NUM taud; [L29] NUM ei, sumej, epi; [L30] int i; [L31] T = 1 [L32] taui = 1 [L33] taud = 1 [L34] K = .5 [L35] yc = .5 [L36] CALL, EXPR y(0) VAL [\old(i)=0, \old(yn)=56, yn=56] [L18] yn += ui [L19] return yn; [L36] RET, EXPR y(0) VAL [yn=54] [L36] yi = y(0) [L37] epi = yc-yi [L38] sumej = epi [L39] i=0 VAL [i=0, yn=54] [L39] COND TRUE i<120 VAL [i=0, yn=54] [L40] CALL, EXPR y(i) VAL [\old(i)=0, \old(yn)=54, yn=54] [L18] yn += ui [L19] return yn; [L40] RET, EXPR y(i) VAL [i=0, yn=53] [L40] yi = y(i) [L41] ei = yc-yi [L42] sumej = sumej+ei [L43] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L44] epi = ei [L46] CALL __VERIFIER_assert(epi >= -1. && epi <= 1.) [L8] COND TRUE !(cond) VAL [yn=53] [L8] reach_error() VAL [yn=53] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 2, 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=13occurred 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, 12 NumberOfCodeBlocks, 12 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 [2024-11-14 02:50:06,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E --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 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:50:09,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:50:09,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 02:50:09,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:50:09,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:50:09,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:50:09,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:50:09,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:50:09,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:50:09,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:50:09,939 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:50:09,940 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:50:09,940 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:50:09,940 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:50:09,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:50:09,941 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:50:09,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:50:09,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:50:09,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:50:09,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:50:09,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:50:09,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:50:09,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:50:09,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:50:09,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:50:09,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:50:09,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:50:09,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:50:09,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:50:09,946 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:50:09,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E 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 -> 934622c50be6b43827f31f94ee6f464812ea7c1827ffb5fb855e650934cdada0 [2024-11-14 02:50:10,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:50:10,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:50:10,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:50:10,351 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:50:10,352 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:50:10,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/float-benchs/water_pid.c Unable to find full path for "g++" [2024-11-14 02:50:12,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:50:13,014 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:50:13,024 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c [2024-11-14 02:50:13,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/6167466ad/5106e9c41bce47f8be06d6efa23cb8a8/FLAG4a65bce9f [2024-11-14 02:50:13,116 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/data/6167466ad/5106e9c41bce47f8be06d6efa23cb8a8 [2024-11-14 02:50:13,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:50:13,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:50:13,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:50:13,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:50:13,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:50:13,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b73593e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13, skipping insertion in model container [2024-11-14 02:50:13,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:50:13,376 WARN L250 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_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-11-14 02:50:13,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:50:13,441 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:50:13,455 WARN L250 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_accab832-ad57-4e59-b682-69a2e6fee30f/sv-benchmarks/c/float-benchs/water_pid.c[452,465] [2024-11-14 02:50:13,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:50:13,495 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:50:13,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13 WrapperNode [2024-11-14 02:50:13,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:50:13,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:50:13,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:50:13,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:50:13,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,556 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-14 02:50:13,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:50:13,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:50:13,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:50:13,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:50:13,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:50:13,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:50:13,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:50:13,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:50:13,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (1/1) ... [2024-11-14 02:50:13,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:50:13,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:50:13,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:50:13,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:50:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:50:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:50:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure y [2024-11-14 02:50:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure y [2024-11-14 02:50:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:50:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:50:13,769 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:50:13,772 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:50:17,183 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-14 02:50:17,183 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:50:17,194 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:50:17,194 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:50:17,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:50:17 BoogieIcfgContainer [2024-11-14 02:50:17,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:50:17,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:50:17,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:50:17,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:50:17,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:50:13" (1/3) ... [2024-11-14 02:50:17,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56586e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:50:17, skipping insertion in model container [2024-11-14 02:50:17,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:50:13" (2/3) ... [2024-11-14 02:50:17,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56586e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:50:17, skipping insertion in model container [2024-11-14 02:50:17,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:50:17" (3/3) ... [2024-11-14 02:50:17,207 INFO L112 eAbstractionObserver]: Analyzing ICFG water_pid.c [2024-11-14 02:50:17,226 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:50:17,227 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG water_pid.c that has 2 procedures, 18 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:50:17,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:50:17,321 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;@3c9c786c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:50:17,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:50:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 02:50:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 02:50:17,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:50:17,336 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:50:17,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:50:17,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:50:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1966314055, now seen corresponding path program 1 times [2024-11-14 02:50:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:50:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197190529] [2024-11-14 02:50:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:50:17,356 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 [2024-11-14 02:50:17,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:50:17,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 02:50:17,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 02:50:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:50:20,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:50:20,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:50:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:50:29,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:50:29,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:50:29,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197190529] [2024-11-14 02:50:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197190529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:50:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:50:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:50:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155794985] [2024-11-14 02:50:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:50:29,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 02:50:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:50:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 02:50:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:50:29,656 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:50:35,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:37,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:39,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:41,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:43,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:45,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:47,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:51,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:53,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:55,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:57,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:50:59,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:01,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:03,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-14 02:51:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:51:03,897 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-14 02:51:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:51:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-14 02:51:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:51:03,908 INFO L225 Difference]: With dead ends: 43 [2024-11-14 02:51:03,908 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 02:51:03,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:51:03,914 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:51:03,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 14 Unknown, 0 Unchecked, 33.0s Time] [2024-11-14 02:51:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 02:51:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 02:51:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:51:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-14 02:51:03,957 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2024-11-14 02:51:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:51:03,957 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-14 02:51:03,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 02:51:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-14 02:51:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 02:51:03,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:51:03,960 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:51:04,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 02:51:04,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 02:51:04,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:51:04,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:51:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1262275468, now seen corresponding path program 1 times [2024-11-14 02:51:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:51:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945740618] [2024-11-14 02:51:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:51:04,163 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 [2024-11-14 02:51:04,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:51:04,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 02:51:04,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 02:51:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:51:09,458 WARN L253 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 02:51:09,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:51:40,017 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~yn~0 (fp.add c_currentRoundingMode .cse0 .cse1)) (= (fp.mul c_currentRoundingMode .cse2 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| c_~yn~0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) .cse5) .cse5)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse5 .cse5) (fp.sub c_currentRoundingMode .cse3 .cse4))))) c_~ui~0) (= |c_ULTIMATE.start_main_~yc~0#1| .cse2) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2024-11-14 02:51:42,255 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= c_~yn~0 (fp.add c_currentRoundingMode .cse0 .cse1)) (= (fp.mul c_currentRoundingMode .cse2 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| c_~yn~0)) (.cse4 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) .cse5) .cse5)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse5 .cse5) (fp.sub c_currentRoundingMode .cse3 .cse4))))) c_~ui~0) (= |c_ULTIMATE.start_main_~yc~0#1| .cse2) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2024-11-14 02:53:14,343 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse10 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse6 (fp.add c_currentRoundingMode .cse10 .cse10)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (let ((.cse5 (fp.div c_currentRoundingMode .cse4 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0))) (.cse7 (fp.add c_currentRoundingMode .cse6 .cse10))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse8 (fp.sub c_currentRoundingMode .cse1 .cse7)) (.cse9 (fp.sub c_currentRoundingMode .cse1 .cse6))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse8 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse9 .cse8) .cse4) .cse4)) (fp.mul c_currentRoundingMode .cse5 (fp.sub c_currentRoundingMode .cse8 .cse9))))))) (and (= .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse7)) (.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse6))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode .cse5 (fp.sub c_currentRoundingMode .cse2 .cse3)))))) (= |c_ULTIMATE.start_main_~yc~0#1| .cse1) (= c_currentRoundingMode roundNearestTiesToEven) (= (fp.add c_currentRoundingMode .cse7 .cse0) |c_ULTIMATE.start_main_#t~ret5#1|)))))) is different from false [2024-11-14 02:53:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 4 not checked. [2024-11-14 02:53:15,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:54:05,882 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:54:32,284 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse2 (fp.neg .cse0)) (.cse3 (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (and (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse3))) (or (fp.leq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| |c_y_#res|) .cse0) (not (fp.geq .cse1 .cse2)) (not (fp.leq .cse1 .cse0))))) (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse3))) (or (fp.geq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| |c_y_#res|) .cse2) (not (fp.geq .cse4 .cse2)) (not (fp.leq .cse4 .cse0)))))))) is different from true [2024-11-14 02:55:23,641 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0)) (.cse3 (fp.neg .cse1)) (.cse4 (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (and (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse4))) (or (fp.leq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse0) .cse1) (not (fp.geq .cse2 .cse3)) (not (fp.leq .cse2 .cse1))))) (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (let ((.cse5 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse4))) (or (fp.geq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_6| .cse0) .cse3) (not (fp.geq .cse5 .cse3)) (not (fp.leq .cse5 .cse1)))))))) is different from true [2024-11-14 02:55:42,166 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:55:47,936 WARN L286 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:55:50,394 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~K~0#1| (let ((.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| |c_ULTIMATE.start_main_#t~ret5#1|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~sumej~0#1| .cse2) |c_ULTIMATE.start_main_~T~0#1|) |c_ULTIMATE.start_main_~taui~0#1|)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~taud~0#1| |c_ULTIMATE.start_main_~T~0#1|) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~epi~0#1|)))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2024-11-14 02:55:52,833 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~K~0#1| (let ((.cse2 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| |c_ULTIMATE.start_main_#t~ret5#1|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~sumej~0#1| .cse2) |c_ULTIMATE.start_main_~T~0#1|) |c_ULTIMATE.start_main_~taui~0#1|)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~taud~0#1| |c_ULTIMATE.start_main_~T~0#1|) (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~epi~0#1|)))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2024-11-14 02:55:58,809 WARN L286 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-14 02:56:05,907 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:56:11,593 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 02:56:14,117 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~K~0#1| (let ((.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~sumej~0#1| .cse3) |c_ULTIMATE.start_main_~T~0#1|) |c_ULTIMATE.start_main_~taui~0#1|)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~taud~0#1| |c_ULTIMATE.start_main_~T~0#1|) (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~epi~0#1|))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2024-11-14 02:56:16,552 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~K~0#1| (let ((.cse3 (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~yc~0#1| .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode |c_ULTIMATE.start_main_~sumej~0#1| .cse3) |c_ULTIMATE.start_main_~T~0#1|) |c_ULTIMATE.start_main_~taui~0#1|)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~taud~0#1| |c_ULTIMATE.start_main_~T~0#1|) (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~epi~0#1|))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2024-11-14 02:56:20,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:56:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945740618] [2024-11-14 02:56:20,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: line 13843 column 7: push canceled [2024-11-14 02:56:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [696056733] [2024-11-14 02:56:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:56:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:56:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:56:20,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:56:20,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_accab832-ad57-4e59-b682-69a2e6fee30f/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-14 02:56:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:56:33,975 WARN L253 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 02:56:33,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 4 not checked. [2024-11-14 03:03:47,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:04:07,696 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-14 03:04:15,787 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-14 03:04:36,051 WARN L286 SmtUtils]: Spent 20.26s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-14 03:04:48,641 WARN L286 SmtUtils]: Spent 12.59s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-14 03:05:23,816 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse2)) (.cse3 (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (and (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| .cse3))) (or (fp.geq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| |c_y_#res|) .cse0) (not (fp.leq .cse1 .cse2)) (not (fp.geq .cse1 .cse0))))) (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| .cse3))) (or (not (fp.leq .cse4 .cse2)) (not (fp.geq .cse4 .cse0)) (fp.leq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| |c_y_#res|) .cse2))))))) is different from false [2024-11-14 03:05:25,861 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.neg .cse2)) (.cse3 (fp.add c_currentRoundingMode |c_old(~yn~0)| c_~ui~0))) (and (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| .cse3))) (or (fp.geq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| |c_y_#res|) .cse0) (not (fp.leq .cse1 .cse2)) (not (fp.geq .cse1 .cse0))))) (forall ((|v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| .cse3))) (or (not (fp.leq .cse4 .cse2)) (not (fp.geq .cse4 .cse0)) (fp.leq (fp.sub c_currentRoundingMode |v_ULTIMATE.start_main_~yc~0#1_BEFORE_CALL_11| |c_y_#res|) .cse2))))))) is different from true