./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX --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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:54:12,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:12,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:54:12,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:12,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:12,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:12,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:12,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:12,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:12,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:12,478 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:12,478 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:12,479 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:12,479 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:54:12,480 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:12,481 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:12,481 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:54:12,482 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:54:12,483 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:12,483 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:54:12,484 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:54:12,494 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:54:12,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:12,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:12,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:54:12,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:54:12,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:54:12,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:12,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:12,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:12,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:12,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:54:12,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:12,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:12,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:12,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:12,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:12,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:12,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:12,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:12,505 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:54:12,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:54:12,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:12,506 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:12,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:12,507 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_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2023-11-12 00:54:12,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:12,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:12,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:12,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:12,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:12,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-12 00:54:16,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:16,351 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:16,351 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-12 00:54:16,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/34d548744/6ffea6d6251d4eec8c59839616d6f8c1/FLAG9871337cc [2023-11-12 00:54:16,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/34d548744/6ffea6d6251d4eec8c59839616d6f8c1 [2023-11-12 00:54:16,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:16,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:16,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:16,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:16,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:16,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d470e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16, skipping insertion in model container [2023-11-12 00:54:16,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,418 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:16,576 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_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-12 00:54:16,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:16,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:16,615 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_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-12 00:54:16,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:16,634 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:16,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16 WrapperNode [2023-11-12 00:54:16,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:16,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:16,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:16,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:16,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,681 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-11-12 00:54:16,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:16,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:16,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:16,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:16,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:16,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:16,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:16,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:16,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (1/1) ... [2023-11-12 00:54:16,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:16,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:54:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:54:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:54:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:54:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:16,878 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:16,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:17,009 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:17,060 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:17,060 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:54:17,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:17 BoogieIcfgContainer [2023-11-12 00:54:17,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:17,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:17,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:17,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:17,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:16" (1/3) ... [2023-11-12 00:54:17,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a44298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:17, skipping insertion in model container [2023-11-12 00:54:17,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:16" (2/3) ... [2023-11-12 00:54:17,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a44298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:17, skipping insertion in model container [2023-11-12 00:54:17,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:17" (3/3) ... [2023-11-12 00:54:17,074 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2023-11-12 00:54:17,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:17,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:54:17,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:17,144 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;@5349b5ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:17,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:54:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:54:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:54:17,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:17,156 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:17,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:17,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:17,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2008667769, now seen corresponding path program 1 times [2023-11-12 00:54:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141005146] [2023-11-12 00:54:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:17,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:54:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:17,449 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:54:17,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:54:17,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:54:17,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:54:17,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:54:17,468 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:54:17,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:54:17 BoogieIcfgContainer [2023-11-12 00:54:17,488 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:54:17,489 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:54:17,489 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:54:17,490 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:54:17,490 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:17" (3/4) ... [2023-11-12 00:54:17,493 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:54:17,494 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:54:17,495 INFO L158 Benchmark]: Toolchain (without parser) took 1115.14ms. Allocated memory is still 186.6MB. Free memory was 147.0MB in the beginning and 104.5MB in the end (delta: 42.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,496 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 134.2MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:17,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.24ms. Allocated memory is still 186.6MB. Free memory was 147.0MB in the beginning and 135.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.57ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 134.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:17,498 INFO L158 Benchmark]: Boogie Preprocessor took 37.01ms. Allocated memory is still 186.6MB. Free memory was 134.4MB in the beginning and 133.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,498 INFO L158 Benchmark]: RCFGBuilder took 342.96ms. Allocated memory is still 186.6MB. Free memory was 133.3MB in the beginning and 120.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,499 INFO L158 Benchmark]: TraceAbstraction took 421.82ms. Allocated memory is still 186.6MB. Free memory was 119.7MB in the beginning and 105.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,500 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 186.6MB. Free memory was 105.0MB in the beginning and 104.5MB in the end (delta: 551.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:17,503 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 134.2MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.24ms. Allocated memory is still 186.6MB. Free memory was 147.0MB in the beginning and 135.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.57ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 134.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.01ms. Allocated memory is still 186.6MB. Free memory was 134.4MB in the beginning and 133.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.96ms. Allocated memory is still 186.6MB. Free memory was 133.3MB in the beginning and 120.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 421.82ms. Allocated memory is still 186.6MB. Free memory was 119.7MB in the beginning and 105.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 186.6MB. Free memory was 105.0MB in the beginning and 104.5MB in the end (delta: 551.5kB). 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 - UnprovableResult [Line: 18]: 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 someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L28] RET assume_abort_if_not(E >= 0. && E <= 1.) [L29] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L29] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 VAL [i=0] [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L16] COND FALSE !(!cond) [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=53, E=53, i=0] [L42] COND FALSE !(__VERIFIER_nondet_int()) [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L53] CALL __VERIFIER_assert(S >= -4. && S <= 4.) [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, 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=14occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:54:17,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/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_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX --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 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:54:20,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:20,402 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:54:20,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:20,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:20,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:20,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:20,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:20,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:20,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:20,462 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:20,463 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:20,463 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:20,464 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:20,464 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:20,465 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:20,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:20,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:20,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:54:20,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:54:20,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:20,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:20,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:20,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:20,474 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:54:20,474 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:54:20,475 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:54:20,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:54:20,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:20,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:20,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:20,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:54:20,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:20,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:20,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:20,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:20,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:20,480 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:54:20,480 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:54:20,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:20,481 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:20,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:20,482 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_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2023-11-12 00:54:20,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:20,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:20,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:20,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:20,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:20,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-12 00:54:24,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:24,313 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:24,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c [2023-11-12 00:54:24,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/10f28045e/3e786e9dc7794a6eba3eaba9b9a34d08/FLAG8c346ae1c [2023-11-12 00:54:24,334 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/data/10f28045e/3e786e9dc7794a6eba3eaba9b9a34d08 [2023-11-12 00:54:24,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:24,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:24,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:24,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:24,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:24,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669dcc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24, skipping insertion in model container [2023-11-12 00:54:24,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:24,533 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_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-12 00:54:24,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:24,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:24,584 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_9a06ae01-051c-4293-921d-b42b9937679f/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2023-11-12 00:54:24,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:24,626 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:24,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24 WrapperNode [2023-11-12 00:54:24,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:24,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:24,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:24,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:24,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,685 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-11-12 00:54:24,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:24,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:24,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:24,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:24,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:24,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:24,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:24,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:24,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (1/1) ... [2023-11-12 00:54:24,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:24,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:54:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:54:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:54:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:54:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:24,940 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:24,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:27,427 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:27,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:27,440 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:54:27,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:27 BoogieIcfgContainer [2023-11-12 00:54:27,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:27,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:27,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:27,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:27,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:24" (1/3) ... [2023-11-12 00:54:27,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e89baae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:27, skipping insertion in model container [2023-11-12 00:54:27,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:24" (2/3) ... [2023-11-12 00:54:27,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e89baae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:27, skipping insertion in model container [2023-11-12 00:54:27,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:27" (3/3) ... [2023-11-12 00:54:27,456 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2023-11-12 00:54:27,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:27,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:54:27,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:27,548 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;@de3345f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:27,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:54:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:54:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:54:27,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:27,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:27,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:54:27,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1343975806, now seen corresponding path program 1 times [2023-11-12 00:54:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:54:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920304074] [2023-11-12 00:54:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:27,588 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 [2023-11-12 00:54:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:54:27,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:54:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a06ae01-051c-4293-921d-b42b9937679f/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:54:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:54:41,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:54:41,485 INFO L285 TraceCheckSpWp]: Computing forward predicates...