./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ --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 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:10:16,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:10:16,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:10:16,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:10:16,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:10:16,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:10:16,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:10:16,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:10:16,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:10:16,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:10:16,329 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:10:16,330 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:10:16,331 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:10:16,331 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:10:16,332 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:10:16,332 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:10:16,333 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:10:16,333 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:10:16,334 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:10:16,334 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:10:16,346 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:10:16,347 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:10:16,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:10:16,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:10:16,351 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:10:16,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:10:16,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:10:16,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:10:16,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:10:16,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:10:16,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:10:16,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:10:16,356 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:10:16,356 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:10:16,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:10:16,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:10:16,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:16,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:10:16,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:10:16,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:10:16,359 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:10:16,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:10:16,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:10:16,359 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:10:16,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:10:16,360 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 [2023-11-19 05:10:16,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:10:16,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:10:16,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:10:16,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:10:16,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:10:16,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2023-11-19 05:10:19,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:10:20,201 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:10:20,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2023-11-19 05:10:20,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/ec2de6107/fdfecb681f7c453f87b6f4b28b8db5d8/FLAGf35481a9c [2023-11-19 05:10:20,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/ec2de6107/fdfecb681f7c453f87b6f4b28b8db5d8 [2023-11-19 05:10:20,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:10:20,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:10:20,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:20,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:10:20,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:10:20,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cdf57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20, skipping insertion in model container [2023-11-19 05:10:20,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:10:20,486 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2023-11-19 05:10:20,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:20,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:10:20,552 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2023-11-19 05:10:20,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:20,586 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:10:20,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20 WrapperNode [2023-11-19 05:10:20,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:20,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:20,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:10:20,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:10:20,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,635 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-19 05:10:20,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:20,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:10:20,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:10:20,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:10:20,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,668 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:10:20,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:10:20,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:10:20,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:10:20,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (1/1) ... [2023-11-19 05:10:20,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:20,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:10:20,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:10:20,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:10:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:10:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:10:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:10:20,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:10:20,892 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:10:20,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:10:21,097 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:10:21,155 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:10:21,155 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:10:21,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:21 BoogieIcfgContainer [2023-11-19 05:10:21,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:10:21,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:10:21,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:10:21,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:10:21,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:10:20" (1/3) ... [2023-11-19 05:10:21,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6325eef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:21, skipping insertion in model container [2023-11-19 05:10:21,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:20" (2/3) ... [2023-11-19 05:10:21,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6325eef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:21, skipping insertion in model container [2023-11-19 05:10:21,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:21" (3/3) ... [2023-11-19 05:10:21,171 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2023-11-19 05:10:21,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:10:21,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:10:21,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:10:21,246 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6904d9cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:10:21,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:10:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-19 05:10:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:10:21,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:21,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:10:21,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:21,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 73372351, now seen corresponding path program 1 times [2023-11-19 05:10:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:10:21,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376842222] [2023-11-19 05:10:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:21,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:10:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:21,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:10:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376842222] [2023-11-19 05:10:21,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376842222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:21,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:21,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:10:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944771421] [2023-11-19 05:10:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:10:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:10:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:10:21,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:21,456 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:10:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:21,478 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-19 05:10:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:10:21,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 05:10:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:21,488 INFO L225 Difference]: With dead ends: 15 [2023-11-19 05:10:21,488 INFO L226 Difference]: Without dead ends: 7 [2023-11-19 05:10:21,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:21,494 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:10:21,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:10:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-19 05:10:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-19 05:10:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-19 05:10:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-19 05:10:21,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-19 05:10:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:21,522 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-19 05:10:21,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-19 05:10:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-19 05:10:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:10:21,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:21,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:10:21,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:10:21,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:21,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2044617620, now seen corresponding path program 1 times [2023-11-19 05:10:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:10:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658882843] [2023-11-19 05:10:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:10:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:21,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:10:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:21,621 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:10:21,622 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:10:21,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:10:21,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:10:21,629 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:10:21,633 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:10:21,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:10:21 BoogieIcfgContainer [2023-11-19 05:10:21,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:10:21,654 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:10:21,654 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:10:21,654 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:10:21,655 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:21" (3/4) ... [2023-11-19 05:10:21,656 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:10:21,658 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:10:21,659 INFO L158 Benchmark]: Toolchain (without parser) took 1423.47ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 93.0MB in the beginning and 125.5MB in the end (delta: -32.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,659 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:21,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.13ms. Allocated memory is still 138.4MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.24ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,661 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 138.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,662 INFO L158 Benchmark]: RCFGBuilder took 484.49ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 79.3MB in the beginning and 150.7MB in the end (delta: -71.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,662 INFO L158 Benchmark]: TraceAbstraction took 488.20ms. Allocated memory is still 182.5MB. Free memory was 149.6MB in the beginning and 125.5MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:21,663 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 182.5MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:21,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.13ms. Allocated memory is still 138.4MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.24ms. Allocated memory is still 138.4MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 138.4MB. Free memory was 80.4MB in the beginning and 79.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.49ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 79.3MB in the beginning and 150.7MB in the end (delta: -71.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 488.20ms. Allocated memory is still 182.5MB. Free memory was 149.6MB in the beginning and 125.5MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 182.5MB. Free memory is still 125.5MB. 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: 12]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L14] float pi = 3.14159 ; [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L22] CALL assume_abort_if_not(x > 0 && x < octant) [L10] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x > 0 && x < octant) [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [count=2, evenExp=1, multFactor=0, oddExp=53, pi=314159/100000, term=53, x=53] [L30] COND TRUE 1 [L32] term = term * (x/count) [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [count=4, multFactor=-1, pi=314159/100000, temp=0, x=53] [L49] CALL __VERIFIER_assert( oddExp >= evenExp ) [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L12] reach_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-19 05:10:21,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ --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 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:10:24,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:10:24,440 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:10:24,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:10:24,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:10:24,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:10:24,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:10:24,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:10:24,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:10:24,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:10:24,481 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:10:24,481 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:10:24,482 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:10:24,483 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:10:24,483 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:10:24,487 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:10:24,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:10:24,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:10:24,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:10:24,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:10:24,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:10:24,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:10:24,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:10:24,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:10:24,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:10:24,500 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:10:24,502 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:10:24,502 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:10:24,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:10:24,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:10:24,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:10:24,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:10:24,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:10:24,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:24,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:10:24,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:10:24,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:10:24,507 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:10:24,508 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:10:24,509 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:10:24,509 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:10:24,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:10:24,510 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 [2023-11-19 05:10:24,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:10:24,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:10:24,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:10:24,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:10:24,957 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:10:24,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2023-11-19 05:10:28,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:10:28,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:10:28,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2023-11-19 05:10:28,412 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/f3efae69f/d225f85e49314f4897e8cce4812e191a/FLAG148f89dba [2023-11-19 05:10:28,427 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/data/f3efae69f/d225f85e49314f4897e8cce4812e191a [2023-11-19 05:10:28,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:10:28,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:10:28,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:28,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:10:28,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:10:28,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0f68e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28, skipping insertion in model container [2023-11-19 05:10:28,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:10:28,614 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2023-11-19 05:10:28,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:28,646 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:10:28,658 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_6a2fc929-411d-40d8-a29c-a5cf190f08dc/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2023-11-19 05:10:28,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:10:28,680 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:10:28,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28 WrapperNode [2023-11-19 05:10:28,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:10:28,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:28,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:10:28,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:10:28,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,718 INFO L138 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-19 05:10:28,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:10:28,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:10:28,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:10:28,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:10:28,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,816 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:10:28,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:10:28,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:10:28,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:10:28,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (1/1) ... [2023-11-19 05:10:28,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:10:28,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:10:28,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:10:28,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:10:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:10:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:10:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:10:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:10:28,991 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:10:28,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:10:31,349 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:10:31,357 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:10:31,360 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:10:31,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:31 BoogieIcfgContainer [2023-11-19 05:10:31,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:10:31,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:10:31,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:10:31,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:10:31,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:10:28" (1/3) ... [2023-11-19 05:10:31,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136eb639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:31, skipping insertion in model container [2023-11-19 05:10:31,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:10:28" (2/3) ... [2023-11-19 05:10:31,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136eb639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:10:31, skipping insertion in model container [2023-11-19 05:10:31,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:31" (3/3) ... [2023-11-19 05:10:31,382 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2023-11-19 05:10:31,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:10:31,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:10:31,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:10:31,446 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9bfc22d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:10:31,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:10:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2023-11-19 05:10:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:10:31,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:31,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:31,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:31,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 119513908, now seen corresponding path program 1 times [2023-11-19 05:10:31,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:31,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067153395] [2023-11-19 05:10:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:31,481 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 [2023-11-19 05:10:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:31,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:10:31,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:10:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:10:31,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:10:31,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:10:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:10:31,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:10:31,688 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:10:31,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067153395] [2023-11-19 05:10:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067153395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:10:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:10:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:10:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387510368] [2023-11-19 05:10:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:10:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:10:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:10:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:10:31,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:31,735 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-19 05:10:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:10:31,768 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-19 05:10:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:10:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-11-19 05:10:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:10:31,780 INFO L225 Difference]: With dead ends: 25 [2023-11-19 05:10:31,781 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 05:10:31,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:10:31,792 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-11-19 05:10:31,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:10:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 05:10:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-19 05:10:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-11-19 05:10:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-19 05:10:31,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2023-11-19 05:10:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:10:31,834 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-19 05:10:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-19 05:10:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-19 05:10:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:10:31,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:10:31,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:10:31,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:10:32,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:10:32,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:10:32,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:10:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1186636597, now seen corresponding path program 1 times [2023-11-19 05:10:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:10:32,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188266471] [2023-11-19 05:10:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:10:32,046 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 [2023-11-19 05:10:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:10:32,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:10:32,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:10:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:32,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:10:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:10:33,673 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 05:10:33,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:10:33,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:10:33,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:10:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:10:33,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:10:33,883 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:10:33,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:10:33 BoogieIcfgContainer [2023-11-19 05:10:33,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:10:33,918 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:10:33,918 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:10:33,918 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:10:33,919 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:10:31" (3/4) ... [2023-11-19 05:10:33,920 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:10:33,970 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:10:33,971 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:10:33,971 INFO L158 Benchmark]: Toolchain (without parser) took 5540.20ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 49.8MB in the beginning and 58.3MB in the end (delta: -8.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,972 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:10:33,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.04ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 37.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.07ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 36.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,974 INFO L158 Benchmark]: Boogie Preprocessor took 97.04ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 71.6MB in the end (delta: -35.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,974 INFO L158 Benchmark]: RCFGBuilder took 2551.08ms. Allocated memory is still 92.3MB. Free memory was 71.2MB in the beginning and 61.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,975 INFO L158 Benchmark]: TraceAbstraction took 2542.95ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 60.4MB in the end (delta: -257.6kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,975 INFO L158 Benchmark]: Witness Printer took 52.90ms. Allocated memory is still 92.3MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:10:33,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.04ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 37.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.07ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 36.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.04ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 71.6MB in the end (delta: -35.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2551.08ms. Allocated memory is still 92.3MB. Free memory was 71.2MB in the beginning and 61.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2542.95ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 60.4MB in the end (delta: -257.6kB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. * Witness Printer took 52.90ms. Allocated memory is still 92.3MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L22] CALL assume_abort_if_not(x > 0 && x < octant) [L10] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, pi=3.141590118408203] [L22] RET assume_abort_if_not(x > 0 && x < octant) [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, term=0.00000000000000000010842021724855044, x=0.00000000000000000010842021724855044] [L30] COND TRUE 1 [L32] term = term * (x/count) [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [count=4, evenExp=1.0, multFactor=-1, octant=1.0471967458724976, oddExp=0.00000000000000000010842021724855044, pi=3.141590118408203, temp=0, term=0.0, x=0.00000000000000000010842021724855044] [L49] CALL __VERIFIER_assert( oddExp >= evenExp ) [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=3.141590118408203] [L12] reach_error() VAL [\old(cond)=0, cond=0, pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2023-11-19 05:10:34,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a2fc929-411d-40d8-a29c-a5cf190f08dc/bin/utaipan-verify-t7M7D8N6sZ/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE