./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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_140d6131-a904-4d1d-9920-4090003ef01f/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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:48:17,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:48:17,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:48:17,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:48:17,164 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:48:17,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:48:17,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:48:17,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:48:17,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:48:17,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:48:17,213 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:48:17,214 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:48:17,215 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:48:17,217 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:48:17,217 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:48:17,217 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:48:17,218 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:48:17,218 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:48:17,219 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:48:17,219 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:48:17,220 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:48:17,221 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:48:17,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:48:17,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:48:17,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:48:17,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:48:17,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:48:17,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:48:17,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:48:17,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:48:17,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:48:17,227 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:48:17,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:48:17,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:48:17,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:48:17,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:48:17,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:48:17,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:17,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:48:17,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:48:17,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:48:17,230 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:48:17,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:48:17,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:48:17,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:48:17,232 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:48:17,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:48:17,232 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_140d6131-a904-4d1d-9920-4090003ef01f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2023-11-21 19:48:17,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:48:17,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:48:17,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:48:17,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:48:17,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:48:17,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2023-11-21 19:48:20,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:48:21,038 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:48:21,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2023-11-21 19:48:21,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/1012b46a0/70c5254ebddc4692a7fa1d96bb802b8c/FLAGf4209ea4d [2023-11-21 19:48:21,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/1012b46a0/70c5254ebddc4692a7fa1d96bb802b8c [2023-11-21 19:48:21,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:48:21,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:48:21,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:21,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:48:21,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:48:21,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348f94b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21, skipping insertion in model container [2023-11-21 19:48:21,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:48:21,326 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_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2023-11-21 19:48:21,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:21,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:48:21,371 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_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2023-11-21 19:48:21,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:21,389 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:48:21,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21 WrapperNode [2023-11-21 19:48:21,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:21,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:21,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:48:21,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:48:21,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,431 INFO L138 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2023-11-21 19:48:21,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:21,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:48:21,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:48:21,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:48:21,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:48:21,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:48:21,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:48:21,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:48:21,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (1/1) ... [2023-11-21 19:48:21,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:48:21,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:48:21,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:48:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:48:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:48:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:48:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2023-11-21 19:48:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2023-11-21 19:48:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 19:48:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:48:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:48:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:48:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:48:21,657 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:48:21,659 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:48:21,919 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:48:22,112 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:48:22,112 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:48:22,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22 BoogieIcfgContainer [2023-11-21 19:48:22,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:48:22,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:48:22,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:48:22,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:48:22,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:48:21" (1/3) ... [2023-11-21 19:48:22,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3451fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:22, skipping insertion in model container [2023-11-21 19:48:22,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:21" (2/3) ... [2023-11-21 19:48:22,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3451fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:22, skipping insertion in model container [2023-11-21 19:48:22,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22" (3/3) ... [2023-11-21 19:48:22,127 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2023-11-21 19:48:22,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:48:22,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:48:22,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:48:22,194 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;@15d91613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:48:22,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:48:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:48:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:48:22,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:22,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:22,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:48:22,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1808912807, now seen corresponding path program 1 times [2023-11-21 19:48:22,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:22,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786438941] [2023-11-21 19:48:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:22,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:22,426 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 19:48:22,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:48:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786438941] [2023-11-21 19:48:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786438941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138781324] [2023-11-21 19:48:22,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:48:22,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:48:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:48:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:48:22,481 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:22,541 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-11-21 19:48:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:48:22,544 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-21 19:48:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:22,552 INFO L225 Difference]: With dead ends: 32 [2023-11-21 19:48:22,552 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 19:48:22,555 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 19:48:22,562 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:22,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:48:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 19:48:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-21 19:48:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:48:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-21 19:48:22,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-11-21 19:48:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:22,605 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-21 19:48:22,605 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-21 19:48:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:48:22,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:22,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:48:22,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:48:22,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1239849094, now seen corresponding path program 1 times [2023-11-21 19:48:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:48:22,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369653557] [2023-11-21 19:48:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:48:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:48:22,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:48:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:48:22,819 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:48:22,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:48:22,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:48:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:48:22,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 19:48:22,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:48:22,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated [2023-11-21 19:48:22,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:48:22 BoogieIcfgContainer [2023-11-21 19:48:22,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:48:22,854 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:48:22,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:48:22,855 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:48:22,855 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:22" (3/4) ... [2023-11-21 19:48:22,857 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 19:48:22,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:48:22,859 INFO L158 Benchmark]: Toolchain (without parser) took 1785.35ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 131.4MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:22,860 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 89.3MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:22,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.35ms. Allocated memory is still 167.8MB. Free memory was 122.5MB in the beginning and 112.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 19:48:22,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.16ms. Allocated memory is still 167.8MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:22,861 INFO L158 Benchmark]: Boogie Preprocessor took 60.75ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 109.0MB in the end (delta: 922.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:22,862 INFO L158 Benchmark]: RCFGBuilder took 620.29ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 90.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:48:22,863 INFO L158 Benchmark]: TraceAbstraction took 733.93ms. Allocated memory is still 167.8MB. Free memory was 88.9MB in the beginning and 132.4MB in the end (delta: -43.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:22,863 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 167.8MB. Free memory was 132.4MB in the beginning and 131.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:22,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory was 89.3MB in the beginning and 89.3MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.35ms. Allocated memory is still 167.8MB. Free memory was 122.5MB in the beginning and 112.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.16ms. Allocated memory is still 167.8MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.75ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 109.0MB in the end (delta: 922.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 620.29ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 90.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 733.93ms. Allocated memory is still 167.8MB. Free memory was 88.9MB in the beginning and 132.4MB in the end (delta: -43.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 167.8MB. Free memory was 132.4MB in the beginning and 131.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 74]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918728] [L29] __uint32_t msw, lsw; VAL [\old(x)=4293918728, x=4293918728] [L32] ieee_double_shape_type ew_u; [L33] EXPR ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] EXPR (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] EXPR (lsw) = ew_u.parts.lsw [L31-L36] { ieee_double_shape_type ew_u; ew_u.value = (x); (msw) = ew_u.parts.msw; (lsw) = ew_u.parts.lsw; } VAL [\old(x)=4293918728, lsw=0, msw=4293918721, x=4293918728] [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918728, \old(y)=4293918729, x=4293918728, y=4293918729] [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4293918728, \old(y)=4293918729, \result=4293918729, x=4293918728, y=4293918729] [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] reach_error() VAL [res=4293918729, x=4293918728, y=4293918729] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 5 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=17occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 19:48:22,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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_140d6131-a904-4d1d-9920-4090003ef01f/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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:48:25,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:48:25,817 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-21 19:48:25,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:48:25,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:48:25,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:48:25,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:48:25,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:48:25,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:48:25,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:48:25,878 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:48:25,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:48:25,879 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:48:25,881 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:48:25,881 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:48:25,882 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:48:25,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:48:25,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:48:25,884 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:48:25,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:48:25,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:48:25,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:48:25,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:48:25,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:48:25,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:48:25,888 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:48:25,888 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:48:25,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:48:25,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:48:25,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:48:25,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:48:25,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:48:25,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:48:25,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:48:25,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:25,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:48:25,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:48:25,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:48:25,893 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:48:25,894 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:48:25,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:48:25,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:48:25,895 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:48:25,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:48:25,896 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_140d6131-a904-4d1d-9920-4090003ef01f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2023-11-21 19:48:26,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:48:26,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:48:26,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:48:26,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:48:26,375 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:48:26,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2023-11-21 19:48:29,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:48:29,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:48:29,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2023-11-21 19:48:29,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/70785d179/ad1246ed02d04a64bb4630b9da9c8092/FLAG5fadbd1b5 [2023-11-21 19:48:29,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/data/70785d179/ad1246ed02d04a64bb4630b9da9c8092 [2023-11-21 19:48:29,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:48:29,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:48:29,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:29,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:48:29,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:48:29,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:29" (1/1) ... [2023-11-21 19:48:29,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1963cec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:29, skipping insertion in model container [2023-11-21 19:48:29,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:48:29" (1/1) ... [2023-11-21 19:48:30,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:48:30,231 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_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2023-11-21 19:48:30,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:30,256 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:48:30,304 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_140d6131-a904-4d1d-9920-4090003ef01f/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2023-11-21 19:48:30,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:48:30,331 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:48:30,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30 WrapperNode [2023-11-21 19:48:30,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:48:30,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:30,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:48:30,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:48:30,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,394 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-11-21 19:48:30,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:48:30,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:48:30,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:48:30,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:48:30,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:48:30,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:48:30,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:48:30,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:48:30,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (1/1) ... [2023-11-21 19:48:30,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:48:30,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:48:30,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:48:30,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:48:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:48:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2023-11-21 19:48:30,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:48:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:48:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2023-11-21 19:48:30,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2023-11-21 19:48:30,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:48:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:48:30,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:48:30,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:48:30,677 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:48:30,680 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:48:31,005 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:48:31,101 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:48:31,110 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:48:31,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:31 BoogieIcfgContainer [2023-11-21 19:48:31,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:48:31,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:48:31,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:48:31,120 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:48:31,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:48:29" (1/3) ... [2023-11-21 19:48:31,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272cbd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:31, skipping insertion in model container [2023-11-21 19:48:31,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:48:30" (2/3) ... [2023-11-21 19:48:31,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272cbd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:48:31, skipping insertion in model container [2023-11-21 19:48:31,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:31" (3/3) ... [2023-11-21 19:48:31,127 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2023-11-21 19:48:31,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:48:31,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:48:31,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:48:31,213 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;@59763c37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:48:31,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:48:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:48:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:48:31,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:31,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:31,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:48:31,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1701803019, now seen corresponding path program 1 times [2023-11-21 19:48:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875629603] [2023-11-21 19:48:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:31,259 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 19:48:31,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:31,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:31,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:31,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 19:48:31,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:31,509 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 19:48:31,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:31,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875629603] [2023-11-21 19:48:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875629603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:31,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:48:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080504065] [2023-11-21 19:48:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:48:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:48:31,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:48:31,569 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:31,620 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2023-11-21 19:48:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:48:31,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-21 19:48:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:31,631 INFO L225 Difference]: With dead ends: 30 [2023-11-21 19:48:31,631 INFO L226 Difference]: Without dead ends: 14 [2023-11-21 19:48:31,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 19:48:31,644 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:48:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-21 19:48:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-21 19:48:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:48:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-21 19:48:31,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2023-11-21 19:48:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:31,712 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-21 19:48:31,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-21 19:48:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:48:31,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:31,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:31,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:31,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:48:31,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1445422518, now seen corresponding path program 1 times [2023-11-21 19:48:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995375618] [2023-11-21 19:48:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:31,923 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 19:48:31,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:31,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:31,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:32,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:48:32,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:32,207 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 19:48:32,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:32,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995375618] [2023-11-21 19:48:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995375618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:32,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:48:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117499776] [2023-11-21 19:48:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:32,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:48:32,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:32,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:48:32,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:32,213 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:32,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:32,390 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-21 19:48:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:48:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-21 19:48:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:32,392 INFO L225 Difference]: With dead ends: 18 [2023-11-21 19:48:32,392 INFO L226 Difference]: Without dead ends: 14 [2023-11-21 19:48:32,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 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 19:48:32,394 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:32,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-21 19:48:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-21 19:48:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:48:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-21 19:48:32,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2023-11-21 19:48:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:32,403 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-21 19:48:32,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:48:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-21 19:48:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:48:32,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:48:32,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:48:32,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:32,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:48:32,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:48:32,607 INFO L85 PathProgramCache]: Analyzing trace with hash -685710557, now seen corresponding path program 1 times [2023-11-21 19:48:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:48:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927387181] [2023-11-21 19:48:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:48:32,610 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 19:48:32,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:48:32,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:32,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:48:32,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 19:48:32,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:48:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 19:48:32,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:48:32,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:48:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927387181] [2023-11-21 19:48:32,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927387181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:48:32,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:48:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:48:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957496081] [2023-11-21 19:48:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:48:32,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:48:32,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:48:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:48:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:48:32,993 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:48:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:48:33,167 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-21 19:48:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:48:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-21 19:48:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:48:33,168 INFO L225 Difference]: With dead ends: 14 [2023-11-21 19:48:33,168 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 19:48:33,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:48:33,170 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:48:33,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:48:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 19:48:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 19:48:33,172 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 19:48:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 19:48:33,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-11-21 19:48:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:48:33,173 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 19:48:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:48:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 19:48:33,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 19:48:33,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:48:33,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:33,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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 19:48:33,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 19:48:33,463 INFO L899 garLoopResultBuilder]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2023-11-21 19:48:33,463 INFO L902 garLoopResultBuilder]: At program point L31-2(lines 31 36) the Hoare annotation is: true [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2023-11-21 19:48:33,464 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 28 53) the Hoare annotation is: true [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 28 53) no Hoare annotation was computed. [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point fmax_double_returnLabel#1(lines 55 63) no Hoare annotation was computed. [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 19:48:33,464 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2023-11-21 19:48:33,465 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 65 78) no Hoare annotation was computed. [2023-11-21 19:48:33,465 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (let ((.cse0 (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 |ULTIMATE.start_fmax_double_~y#1|) (= .cse0 |ULTIMATE.start_fmax_double_~x#1|)))) [2023-11-21 19:48:33,465 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 60) no Hoare annotation was computed. [2023-11-21 19:48:33,465 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (let ((.cse0 (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (and (= .cse0 |ULTIMATE.start_fmax_double_~y#1|) (= .cse0 |ULTIMATE.start_fmax_double_~x#1|)))) [2023-11-21 19:48:33,465 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2023-11-21 19:48:33,466 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2023-11-21 19:48:33,466 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-11-21 19:48:33,469 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 19:48:33,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:48:33,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:48:33 BoogieIcfgContainer [2023-11-21 19:48:33,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:48:33,490 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:48:33,490 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:48:33,491 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:48:33,491 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:48:31" (3/4) ... [2023-11-21 19:48:33,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 19:48:33,498 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2023-11-21 19:48:33,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-21 19:48:33,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-21 19:48:33,506 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 19:48:33,507 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:48:33,635 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:48:33,636 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 19:48:33,636 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:48:33,637 INFO L158 Benchmark]: Toolchain (without parser) took 3662.94ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 64.0MB in the beginning and 92.3MB in the end (delta: -28.3MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,638 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 88.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:33,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.65ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 52.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.48ms. Allocated memory is still 88.1MB. Free memory was 52.0MB in the beginning and 50.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:48:33,642 INFO L158 Benchmark]: Boogie Preprocessor took 65.52ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 48.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,642 INFO L158 Benchmark]: RCFGBuilder took 651.21ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 56.9MB in the end (delta: -8.3MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,643 INFO L158 Benchmark]: TraceAbstraction took 2374.86ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 60.3MB in the end (delta: -3.9MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,643 INFO L158 Benchmark]: Witness Printer took 145.89ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 92.3MB in the end (delta: -32.0MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-11-21 19:48:33,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 88.1MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.65ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 52.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.48ms. Allocated memory is still 88.1MB. Free memory was 52.0MB in the beginning and 50.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.52ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 48.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.21ms. Allocated memory is still 88.1MB. Free memory was 48.6MB in the beginning and 56.9MB in the end (delta: -8.3MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2374.86ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 60.3MB in the end (delta: -3.9MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 145.89ms. Allocated memory is still 117.4MB. Free memory was 60.3MB in the beginning and 92.3MB in the end (delta: -32.0MB). Peak memory consumption was 4.6MB. 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 - PositiveResult [Line: 74]: 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 30 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 30 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 8 QuantifiedInterpolants, 116 SizeOfPredicates, 17 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 5/5 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: 31]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-21 19:48:33,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_140d6131-a904-4d1d-9920-4090003ef01f/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