./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5 --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 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:36:07,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:36:07,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:36:07,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:36:07,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:36:07,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:36:07,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:36:07,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:36:07,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:36:07,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:36:07,360 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:36:07,361 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:36:07,361 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:36:07,363 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:36:07,363 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:36:07,364 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:36:07,364 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:36:07,365 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:36:07,365 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:36:07,366 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:36:07,367 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:36:07,368 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:36:07,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:36:07,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:36:07,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:36:07,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:36:07,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:36:07,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:36:07,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:36:07,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:36:07,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:36:07,374 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:36:07,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:36:07,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:36:07,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:36:07,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:36:07,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:36:07,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:07,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:36:07,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:36:07,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:36:07,377 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:36:07,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:36:07,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:36:07,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:36:07,378 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:36:07,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:36:07,378 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 [2023-11-21 19:36:07,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:36:07,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:36:07,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:36:07,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:36:07,654 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:36:07,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2023-11-21 19:36:10,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:36:11,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:36:11,002 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2023-11-21 19:36:11,011 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/9f3a0ae02/6efdb5fd861a4ba19606708a10923d6c/FLAGda56d1a7d [2023-11-21 19:36:11,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/9f3a0ae02/6efdb5fd861a4ba19606708a10923d6c [2023-11-21 19:36:11,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:36:11,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:36:11,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:11,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:36:11,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:36:11,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ff64f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11, skipping insertion in model container [2023-11-21 19:36:11,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:11,260 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2023-11-21 19:36:11,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:11,280 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:36:11,305 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2023-11-21 19:36:11,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:11,321 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:36:11,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11 WrapperNode [2023-11-21 19:36:11,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:11,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:11,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:36:11,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:36:11,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,364 INFO L138 Inliner]: procedures = 16, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 140 [2023-11-21 19:36:11,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:11,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:36:11,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:36:11,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:36:11,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:36:11,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:36:11,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:36:11,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:36:11,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (1/1) ... [2023-11-21 19:36:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:11,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:11,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:36:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:36:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 19:36:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:36:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:36:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:36:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:36:11,590 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:36:11,593 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:36:11,857 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:36:12,094 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:36:12,094 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 19:36:12,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:12 BoogieIcfgContainer [2023-11-21 19:36:12,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:36:12,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:36:12,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:36:12,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:36:12,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:36:11" (1/3) ... [2023-11-21 19:36:12,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218690b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:12, skipping insertion in model container [2023-11-21 19:36:12,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:11" (2/3) ... [2023-11-21 19:36:12,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218690b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:12, skipping insertion in model container [2023-11-21 19:36:12,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:12" (3/3) ... [2023-11-21 19:36:12,105 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2023-11-21 19:36:12,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:36:12,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:36:12,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:36:12,188 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;@4d2e2f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:36:12,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:36:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 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) [2023-11-21 19:36:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:36:12,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:12,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:12,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:12,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1069623839, now seen corresponding path program 1 times [2023-11-21 19:36:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:12,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863833842] [2023-11-21 19:36:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:12,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:12,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863833842] [2023-11-21 19:36:12,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863833842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:36:12,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874695435] [2023-11-21 19:36:12,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:36:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:36:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:36:12,427 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:36:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:12,462 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2023-11-21 19:36:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:36:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-21 19:36:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:12,474 INFO L225 Difference]: With dead ends: 41 [2023-11-21 19:36:12,474 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 19:36:12,477 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 [2023-11-21 19:36:12,481 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:12,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:36:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 19:36:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 19:36:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-11-21 19:36:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-21 19:36:12,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2023-11-21 19:36:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:12,517 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-21 19:36:12,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:36:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-21 19:36:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:36:12,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:12,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:12,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:36:12,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:12,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1523009406, now seen corresponding path program 1 times [2023-11-21 19:36:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:12,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327752906] [2023-11-21 19:36:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:36:12,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:36:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:36:12,640 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:36:12,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:36:12,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:36:12,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:36:12,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 19:36:12,651 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:36:12,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:36:12 BoogieIcfgContainer [2023-11-21 19:36:12,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:36:12,672 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:36:12,672 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:36:12,673 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:36:12,673 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:12" (3/4) ... [2023-11-21 19:36:12,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:36:12,676 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:36:12,677 INFO L158 Benchmark]: Toolchain (without parser) took 1639.32ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 78.4MB in the beginning and 62.8MB in the end (delta: 15.6MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-21 19:36:12,678 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:12,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.01ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 66.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 19:36:12,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.76ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:36:12,679 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 121.6MB. Free memory was 64.8MB in the beginning and 63.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:12,680 INFO L158 Benchmark]: RCFGBuilder took 692.95ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 63.1MB in the beginning and 92.2MB in the end (delta: -29.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-11-21 19:36:12,681 INFO L158 Benchmark]: TraceAbstraction took 573.59ms. Allocated memory is still 146.8MB. Free memory was 92.2MB in the beginning and 62.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-21 19:36:12,681 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 146.8MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:12,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.01ms. Allocated memory is still 121.6MB. Free memory was 78.4MB in the beginning and 66.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.76ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 121.6MB. Free memory was 64.8MB in the beginning and 63.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 692.95ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 63.1MB in the beginning and 92.2MB in the end (delta: -29.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 573.59ms. Allocated memory is still 146.8MB. Free memory was 92.2MB in the beginning and 62.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 146.8MB. Free memory is still 62.8MB. 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: 76]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L72] CALL, EXPR trunc_double(x) [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=4294967304, x=4294967304] [L25] ieee_double_shape_type ew_u; [L26] EXPR ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] EXPR (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] EXPR (lsw) = ew_u.parts.lsw [L24-L29] { ieee_double_shape_type ew_u; ew_u.value = (x); (msw) = ew_u.parts.msw; (lsw) = ew_u.parts.lsw; } VAL [\old(x)=4294967304, lsw=0, msw=-1, x=4294967304] [L30] signbit = msw & 0x80000000 [L31] EXPR msw & 0x7ff00000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967304, exponent_less_1023=1024, lsw=0, msw=-1, signbit=-2147483648, x=4294967304] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967304, exponent_less_1023=1024, lsw=0, msw=-1, signbit=-2147483648, x=4294967304] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=4294967304, exponent_less_1023=1024, lsw=0, msw=-1, signbit=-2147483648, x=4294967304] [L72] RET, EXPR trunc_double(x) [L72] double res = trunc_double(x); [L75] CALL, EXPR isnan_double(res) [L17] return x != x; [L75] RET, EXPR isnan_double(res) [L75] COND TRUE !isnan_double(res) [L76] reach_error() VAL [res=4294967303, x=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 6 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=21occurred 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2023-11-21 19:36:12,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5 --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 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:36:15,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:36:15,491 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-21 19:36:15,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:36:15,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:36:15,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:36:15,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:36:15,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:36:15,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:36:15,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:36:15,552 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:36:15,553 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:36:15,553 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:36:15,555 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:36:15,556 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:36:15,556 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:36:15,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:36:15,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:36:15,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:36:15,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:36:15,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:36:15,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:36:15,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:36:15,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:36:15,563 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:36:15,564 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:36:15,564 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:36:15,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:36:15,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:36:15,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:36:15,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:36:15,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:36:15,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:36:15,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:36:15,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:15,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:36:15,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:36:15,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:36:15,570 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:36:15,571 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:36:15,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:36:15,572 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:36:15,572 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:36:15,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:36:15,573 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8753b765717c2fe536e6a90ddefcee5a9aeaabafbc1bd4d26f8bbeefc7c2c477 [2023-11-21 19:36:16,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:36:16,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:36:16,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:36:16,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:36:16,048 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:36:16,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2023-11-21 19:36:19,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:36:19,494 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:36:19,495 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c [2023-11-21 19:36:19,503 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/82a609d84/9301b4cc9d254c6ba1324d1fe2dd81e6/FLAG9c6b8c81c [2023-11-21 19:36:19,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/data/82a609d84/9301b4cc9d254c6ba1324d1fe2dd81e6 [2023-11-21 19:36:19,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:36:19,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:36:19,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:19,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:36:19,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:36:19,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8454285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19, skipping insertion in model container [2023-11-21 19:36:19,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:19,751 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2023-11-21 19:36:19,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:19,774 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:36:19,826 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_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/sv-benchmarks/c/float-newlib/double_req_bl_1071.c[1883,1896] [2023-11-21 19:36:19,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:19,854 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:36:19,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19 WrapperNode [2023-11-21 19:36:19,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:19,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:19,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:36:19,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:36:19,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,938 INFO L138 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-21 19:36:19,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:19,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:36:19,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:36:19,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:36:19,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:19,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:20,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:36:20,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:36:20,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:36:20,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:36:20,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (1/1) ... [2023-11-21 19:36:20,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:20,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:36:20,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:36:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:36:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2023-11-21 19:36:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2023-11-21 19:36:20,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:36:20,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:36:20,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:36:20,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:36:20,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:36:20,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:36:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:36:20,228 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:36:20,230 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:36:20,556 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:36:20,583 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:36:20,583 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 19:36:20,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:20 BoogieIcfgContainer [2023-11-21 19:36:20,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:36:20,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:36:20,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:36:20,593 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:36:20,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:36:19" (1/3) ... [2023-11-21 19:36:20,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543e88b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:20, skipping insertion in model container [2023-11-21 19:36:20,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:19" (2/3) ... [2023-11-21 19:36:20,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543e88b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:20, skipping insertion in model container [2023-11-21 19:36:20,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:20" (3/3) ... [2023-11-21 19:36:20,597 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2023-11-21 19:36:20,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:36:20,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:36:20,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:36:20,675 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;@c036b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:36:20,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:36:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 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) [2023-11-21 19:36:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:36:20,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:20,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:20,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:20,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1571756259, now seen corresponding path program 1 times [2023-11-21 19:36:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871125626] [2023-11-21 19:36:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:20,710 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 [2023-11-21 19:36:20,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:20,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:36:20,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:20,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 19:36:20,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:20,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:20,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:20,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871125626] [2023-11-21 19:36:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871125626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:20,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:36:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444786538] [2023-11-21 19:36:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:20,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:36:20,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:36:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:36:20,940 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:36:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:20,980 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2023-11-21 19:36:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:36:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-21 19:36:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:20,991 INFO L225 Difference]: With dead ends: 41 [2023-11-21 19:36:20,991 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 19:36:20,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:36:21,001 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:21,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:36:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 19:36:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 19:36:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2023-11-21 19:36:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-21 19:36:21,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2023-11-21 19:36:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:21,041 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-21 19:36:21,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:36:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-21 19:36:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:36:21,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:21,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:21,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:21,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:21,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:21,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2036599176, now seen corresponding path program 1 times [2023-11-21 19:36:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994786099] [2023-11-21 19:36:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:21,250 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 [2023-11-21 19:36:21,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:21,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:36:21,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:21,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 19:36:21,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:21,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:21,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994786099] [2023-11-21 19:36:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994786099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:21,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:21,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:36:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996766190] [2023-11-21 19:36:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:36:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:36:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:36:21,542 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2023-11-21 19:36:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:21,708 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-21 19:36:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:36:21,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) Word has length 10 [2023-11-21 19:36:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:21,710 INFO L225 Difference]: With dead ends: 24 [2023-11-21 19:36:21,710 INFO L226 Difference]: Without dead ends: 18 [2023-11-21 19:36:21,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:21,712 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:21,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-21 19:36:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-21 19:36:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-11-21 19:36:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-21 19:36:21,718 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2023-11-21 19:36:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:21,719 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-21 19:36:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2023-11-21 19:36:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-21 19:36:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:36:21,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:21,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:21,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:21,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:21,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:21,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -833766478, now seen corresponding path program 1 times [2023-11-21 19:36:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:36:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353895258] [2023-11-21 19:36:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:21,927 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 [2023-11-21 19:36:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:36:21,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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) [2023-11-21 19:36:21,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 (4)] Waiting until timeout for monitored process [2023-11-21 19:36:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:22,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 19:36:22,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:22,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:22,402 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:36:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353895258] [2023-11-21 19:36:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353895258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:22,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:36:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710390217] [2023-11-21 19:36:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:22,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:36:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:36:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:36:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:36:22,405 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:22,631 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-21 19:36:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:36:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:36:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:22,633 INFO L225 Difference]: With dead ends: 18 [2023-11-21 19:36:22,633 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 19:36:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:22,635 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:22,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 19:36:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 19:36:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-21 19:36:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 19:36:22,638 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-11-21 19:36:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:22,638 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 19:36:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:22,638 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 19:36:22,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 19:36:22,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:36:22,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:22,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 [2023-11-21 19:36:22,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 19:36:22,916 INFO L899 garLoopResultBuilder]: For program point trunc_double_returnLabel#1(lines 19 62) no Hoare annotation was computed. [2023-11-21 19:36:22,916 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 64 81) no Hoare annotation was computed. [2023-11-21 19:36:22,916 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 60) no Hoare annotation was computed. [2023-11-21 19:36:22,917 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2023-11-21 19:36:22,917 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 29) no Hoare annotation was computed. [2023-11-21 19:36:22,918 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_trunc_double_~x#1|)) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-21 19:36:22,919 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2023-11-21 19:36:22,919 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 60) no Hoare annotation was computed. [2023-11-21 19:36:22,919 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 41 47) no Hoare annotation was computed. [2023-11-21 19:36:22,919 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 47) the Hoare annotation is: false [2023-11-21 19:36:22,920 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 48) no Hoare annotation was computed. [2023-11-21 19:36:22,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 19:36:22,920 INFO L899 garLoopResultBuilder]: For program point L54-1(lines 54 59) no Hoare annotation was computed. [2023-11-21 19:36:22,921 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 54 59) the Hoare annotation is: false [2023-11-21 19:36:22,921 INFO L899 garLoopResultBuilder]: For program point L54-3(lines 32 60) no Hoare annotation was computed. [2023-11-21 19:36:22,921 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 52) no Hoare annotation was computed. [2023-11-21 19:36:22,922 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 78) no Hoare annotation was computed. [2023-11-21 19:36:22,922 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 19:36:22,922 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 39) no Hoare annotation was computed. [2023-11-21 19:36:22,923 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 39) the Hoare annotation is: false [2023-11-21 19:36:22,925 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2023-11-21 19:36:22,932 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 19:36:22,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:36:22,953 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~64(currentRoundingMode, ~Pluszero~64(), ~Pluszero~64()) == ~x) could not be translated [2023-11-21 19:36:22,954 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-21 19:36:22,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:36:22 BoogieIcfgContainer [2023-11-21 19:36:22,955 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:36:22,956 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:36:22,956 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:36:22,956 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:36:22,957 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:20" (3/4) ... [2023-11-21 19:36:22,962 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 19:36:22,974 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-21 19:36:22,976 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-21 19:36:22,977 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 19:36:22,979 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:36:23,094 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:36:23,095 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 19:36:23,095 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:36:23,096 INFO L158 Benchmark]: Toolchain (without parser) took 3573.89ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 45.0MB in the beginning and 41.0MB in the end (delta: 4.0MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,096 INFO L158 Benchmark]: CDTParser took 1.12ms. Allocated memory is still 69.2MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:23,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.60ms. Allocated memory is still 69.2MB. Free memory was 44.9MB in the beginning and 32.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.42ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 32.9MB in the beginning and 75.5MB in the end (delta: -42.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,099 INFO L158 Benchmark]: Boogie Preprocessor took 68.64ms. Allocated memory is still 96.5MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:23,099 INFO L158 Benchmark]: RCFGBuilder took 578.68ms. Allocated memory is still 96.5MB. Free memory was 74.0MB in the beginning and 58.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,100 INFO L158 Benchmark]: TraceAbstraction took 2365.50ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 46.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,100 INFO L158 Benchmark]: Witness Printer took 139.32ms. Allocated memory is still 96.5MB. Free memory was 46.4MB in the beginning and 41.0MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 19:36:23,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12ms. Allocated memory is still 69.2MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.60ms. Allocated memory is still 69.2MB. Free memory was 44.9MB in the beginning and 32.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.42ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 32.9MB in the beginning and 75.5MB in the end (delta: -42.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.64ms. Allocated memory is still 96.5MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 578.68ms. Allocated memory is still 96.5MB. Free memory was 74.0MB in the beginning and 58.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2365.50ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 46.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 139.32ms. Allocated memory is still 96.5MB. Free memory was 46.4MB in the beginning and 41.0MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~64(currentRoundingMode, ~Pluszero~64(), ~Pluszero~64()) == ~x) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * 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 - PositiveResult [Line: 76]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 39 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5 NumberOfFragments, 14 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 5 QuantifiedInterpolants, 181 SizeOfPredicates, 14 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-21 19:36:23,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05fb4b58-ae99-40d7-a1c6-f2bdccb366c6/bin/utaipan-verify-QoSU8krkJ5/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 Result: TRUE