./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.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_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:57:35,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:57:35,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 18:57:35,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:57:35,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:57:35,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:57:35,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:57:35,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:57:35,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:57:35,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:57:35,548 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:57:35,549 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:57:35,550 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:57:35,551 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:57:35,552 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:57:35,552 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:57:35,553 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:57:35,553 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:57:35,554 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:57:35,554 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:57:35,556 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:57:35,557 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:57:35,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:57:35,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:57:35,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:57:35,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:57:35,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:57:35,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:57:35,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:57:35,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:57:35,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:57:35,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:57:35,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:57:35,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:57:35,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:57:35,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:57:35,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:57:35,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:35,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:57:35,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:57:35,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:57:35,589 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:57:35,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:57:35,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:57:35,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:57:35,590 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:57:35,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:57:35,590 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2023-11-21 18:57:35,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:57:35,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:57:35,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:57:35,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:57:35,959 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:57:35,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2023-11-21 18:57:38,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:39,241 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:39,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2023-11-21 18:57:39,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/12f3f9571/db532fe666cd4381979c00a462209fd6/FLAG15a055f10 [2023-11-21 18:57:39,266 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/12f3f9571/db532fe666cd4381979c00a462209fd6 [2023-11-21 18:57:39,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:39,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:39,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:39,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:39,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:39,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14699d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39, skipping insertion in model container [2023-11-21 18:57:39,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:39,531 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2023-11-21 18:57:39,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:39,546 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:39,592 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2023-11-21 18:57:39,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:39,609 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:39,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39 WrapperNode [2023-11-21 18:57:39,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:39,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:39,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:39,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:39,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,656 INFO L138 Inliner]: procedures = 18, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2023-11-21 18:57:39,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:39,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:39,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:39,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:39,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:39,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:39,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:39,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:39,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (1/1) ... [2023-11-21 18:57:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:39,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:39,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:39,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 18:57:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:57:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-21 18:57:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-21 18:57:39,960 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:39,962 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:40,299 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:40,483 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:40,486 INFO L308 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-21 18:57:40,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:40 BoogieIcfgContainer [2023-11-21 18:57:40,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:40,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:40,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:40,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:40,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:39" (1/3) ... [2023-11-21 18:57:40,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:40, skipping insertion in model container [2023-11-21 18:57:40,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:39" (2/3) ... [2023-11-21 18:57:40,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:40, skipping insertion in model container [2023-11-21 18:57:40,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:40" (3/3) ... [2023-11-21 18:57:40,501 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2023-11-21 18:57:40,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:40,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:57:40,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:40,584 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;@5a32c893, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:40,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:57:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 41 states have internal predecessors, (66), 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 18:57:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:57:40,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:40,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:40,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -823968380, now seen corresponding path program 1 times [2023-11-21 18:57:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622714423] [2023-11-21 18:57:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:40,769 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 18:57:40,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 18:57:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622714423] [2023-11-21 18:57:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622714423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:40,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408920473] [2023-11-21 18:57:40,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:40,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 18:57:40,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 18:57:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 18:57:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:57:40,827 INFO L87 Difference]: Start difference. First operand has 45 states, 40 states have (on average 1.65) internal successors, (66), 41 states have internal predecessors, (66), 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), 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 18:57:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:57:40,886 INFO L93 Difference]: Finished difference Result 89 states and 141 transitions. [2023-11-21 18:57:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:57:40,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 18:57:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:57:40,899 INFO L225 Difference]: With dead ends: 89 [2023-11-21 18:57:40,899 INFO L226 Difference]: Without dead ends: 43 [2023-11-21 18:57:40,903 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 18:57:40,907 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 18:57:40,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 18:57:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-21 18:57:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-21 18:57:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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 18:57:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-11-21 18:57:40,956 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 8 [2023-11-21 18:57:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:57:40,957 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-11-21 18:57:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:57:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-11-21 18:57:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:57:40,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:40,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 18:57:40,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:40,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1668637959, now seen corresponding path program 1 times [2023-11-21 18:57:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041417961] [2023-11-21 18:57:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:57:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:41,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:57:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:57:41,109 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 18:57:41,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 18:57:41,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 18:57:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 18:57:41,118 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 18:57:41,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:57:41,143 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short17 could not be translated [2023-11-21 18:57:41,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:57:41 BoogieIcfgContainer [2023-11-21 18:57:41,154 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:57:41,155 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:57:41,156 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:57:41,156 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:57:41,157 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:40" (3/4) ... [2023-11-21 18:57:41,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:57:41,160 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:57:41,161 INFO L158 Benchmark]: Toolchain (without parser) took 1890.42ms. Allocated memory is still 195.0MB. Free memory was 163.2MB in the beginning and 103.2MB in the end (delta: 60.0MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,162 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 101.8MB in the beginning and 101.7MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:41,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.09ms. Allocated memory is still 195.0MB. Free memory was 163.1MB in the beginning and 152.5MB in the end (delta: 10.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.24ms. Allocated memory is still 195.0MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,164 INFO L158 Benchmark]: Boogie Preprocessor took 44.02ms. Allocated memory is still 195.0MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,165 INFO L158 Benchmark]: RCFGBuilder took 787.59ms. Allocated memory is still 195.0MB. Free memory was 148.4MB in the beginning and 133.9MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,166 INFO L158 Benchmark]: TraceAbstraction took 661.01ms. Allocated memory is still 195.0MB. Free memory was 133.5MB in the beginning and 103.2MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-21 18:57:41,166 INFO L158 Benchmark]: Witness Printer took 5.34ms. Allocated memory is still 195.0MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:57:41,170 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 101.8MB in the beginning and 101.7MB in the end (delta: 72.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.09ms. Allocated memory is still 195.0MB. Free memory was 163.1MB in the beginning and 152.5MB in the end (delta: 10.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.24ms. Allocated memory is still 195.0MB. Free memory was 152.5MB in the beginning and 150.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.02ms. Allocated memory is still 195.0MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 787.59ms. Allocated memory is still 195.0MB. Free memory was 148.4MB in the beginning and 133.9MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 661.01ms. Allocated memory is still 195.0MB. Free memory was 133.5MB in the beginning and 103.2MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 5.34ms. Allocated memory is still 195.0MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short17 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: 184]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 183, overapproximation of someUnaryDOUBLEoperation at line 86, overapproximation of someBinaryArithmeticFLOAToperation at line 105. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L83-L90] static const float one_acos = 1.0000000000e+00, pi = 3.1415925026e+00, pio2_hi_acos = 1.5707962513e+00, pio2_lo_acos = 7.5497894159e-08, pS0_acos = 1.6666667163e-01, pS1_acos = -3.2556581497e-01, pS2_acos = 2.0121252537e-01, pS3_acos = -4.0055535734e-02, pS4_acos = 7.9153501429e-04, pS5_acos = 3.4793309169e-05, qS1_acos = -2.4033949375e+00, qS2_acos = 2.0209457874e+00, qS3_acos = -6.8828397989e-01, qS4_acos = 7.7038154006e-02; [L179] float x = 1.0f; [L180] CALL, EXPR __ieee754_acosf(x) [L93] float z, p, q, r, w, s, c, df; [L94] __int32_t hx, ix; VAL [\old(x)=1, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L96] ieee_float_shape_type gf_u; [L97] EXPR gf_u.value = (x) [L98] EXPR gf_u.word [L98] EXPR (hx) = gf_u.word [L95-L99] { ieee_float_shape_type gf_u; gf_u.value = (x); (hx) = gf_u.word; } VAL [\old(x)=1, hx=1065353216, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L100] ix = hx & 0x7fffffff VAL [\old(x)=1, hx=1065353216, ix=1065353216, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L101] COND TRUE ix == 0x3f800000 [L102] COND TRUE hx > 0 [L103] return 0.0; VAL [\old(x)=1, \result=0, hx=1065353216, ix=1065353216, one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L180] RET, EXPR __ieee754_acosf(x) [L180] float res = __ieee754_acosf(x); [L183] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] [L183] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L184] reach_error() VAL [one_acos=1, one_sqrt=1, pS0_acos=16666667163/100000000000, pS2_acos=20121252537/100000000000, pS4_acos=79153501429/100000000000000, pS5_acos=34793309169/1000000000000000, pi=15707962513/10000000000, pi=15707962513/5000000000, pi=75497894159/1000000000000000000, qS2_acos=10104728937/5000000000, qS4_acos=38519077003/500000000000, res=0, tiny_sqrt=1/1000000000000000000000000000000, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 46 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 46 mSDtfsCounter, 10 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=45occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 18:57:41,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:57:43,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:57:43,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-21 18:57:43,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:57:43,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:57:44,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:57:44,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:57:44,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:57:44,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:57:44,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:57:44,046 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:57:44,046 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:57:44,046 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:57:44,048 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:57:44,049 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:57:44,049 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:57:44,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:57:44,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:57:44,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:57:44,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:57:44,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:57:44,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:57:44,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:57:44,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:57:44,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:57:44,055 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:57:44,055 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:57:44,056 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:57:44,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:57:44,057 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:57:44,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:57:44,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 18:57:44,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:57:44,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:57:44,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:44,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:57:44,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:57:44,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:57:44,061 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:57:44,062 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:57:44,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:57:44,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:57:44,063 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:57:44,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:57:44,066 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d3574782fa6454b0d1694c2d11597178e5561b6615edd1b2b746975245a1dc [2023-11-21 18:57:44,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:57:44,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:57:44,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:57:44,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:57:44,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:57:44,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2023-11-21 18:57:47,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:57:47,924 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:57:47,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c [2023-11-21 18:57:47,941 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/fea1d11d7/4e0cef128f354de5a9dc4ec279863f76/FLAGfc4de5fc1 [2023-11-21 18:57:47,960 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/data/fea1d11d7/4e0cef128f354de5a9dc4ec279863f76 [2023-11-21 18:57:47,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:57:47,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:57:47,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:47,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:57:47,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:57:47,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:47" (1/1) ... [2023-11-21 18:57:47,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a639312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:47, skipping insertion in model container [2023-11-21 18:57:47,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:57:47" (1/1) ... [2023-11-21 18:57:48,007 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:57:48,222 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2023-11-21 18:57:48,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:48,243 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:57:48,307 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_78edf05a-ac59-49d9-8c90-10c26ff9938b/sv-benchmarks/c/float-newlib/float_req_bl_0480.c[4489,4502] [2023-11-21 18:57:48,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:57:48,362 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:57:48,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48 WrapperNode [2023-11-21 18:57:48,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:57:48,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:48,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:57:48,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:57:48,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,465 INFO L138 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2023-11-21 18:57:48,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:57:48,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:57:48,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:57:48,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:57:48,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:57:48,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:57:48,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:57:48,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:57:48,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (1/1) ... [2023-11-21 18:57:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:57:48,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:57:48,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:57:48,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:57:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:57:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:57:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:57:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-21 18:57:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 18:57:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:57:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-21 18:57:48,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 18:57:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:57:48,678 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2023-11-21 18:57:48,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2023-11-21 18:57:48,783 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:48,785 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:58,862 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:58,972 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:58,973 INFO L308 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-21 18:57:58,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:58 BoogieIcfgContainer [2023-11-21 18:57:58,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:58,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:58,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:58,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:58,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:57:47" (1/3) ... [2023-11-21 18:57:58,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece0fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:58, skipping insertion in model container [2023-11-21 18:57:58,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:57:48" (2/3) ... [2023-11-21 18:57:58,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece0fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:58, skipping insertion in model container [2023-11-21 18:57:58,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:58" (3/3) ... [2023-11-21 18:57:58,984 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0480.c [2023-11-21 18:57:59,005 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:59,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:57:59,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:59,068 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;@f3edfec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:59,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:57:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 39 states have internal predecessors, (63), 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 18:57:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:57:59,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:59,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:57:59,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:59,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2019825892, now seen corresponding path program 1 times [2023-11-21 18:57:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:57:59,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534538810] [2023-11-21 18:57:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:59,099 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 18:57:59,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:57:59,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:57:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:57:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:57:59,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 18:57:59,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:57:59,809 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 18:57:59,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:57:59,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:57:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534538810] [2023-11-21 18:57:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534538810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:57:59,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:57:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 18:57:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839465452] [2023-11-21 18:57:59,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:57:59,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 18:57:59,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:57:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 18:57:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:57:59,852 INFO L87 Difference]: Start difference. First operand has 43 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 39 states have internal predecessors, (63), 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), 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 18:58:02,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:58:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:02,366 INFO L93 Difference]: Finished difference Result 85 states and 135 transitions. [2023-11-21 18:58:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 18:58:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 18:58:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:02,376 INFO L225 Difference]: With dead ends: 85 [2023-11-21 18:58:02,376 INFO L226 Difference]: Without dead ends: 41 [2023-11-21 18:58:02,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 18:58:02,383 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:02,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-11-21 18:58:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-21 18:58:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-21 18:58:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 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 18:58:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2023-11-21 18:58:02,433 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 8 [2023-11-21 18:58:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2023-11-21 18:58:02,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-11-21 18:58:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:58:02,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:02,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:02,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:02,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:58:02,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1226868043, now seen corresponding path program 1 times [2023-11-21 18:58:02,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:02,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283261958] [2023-11-21 18:58:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:02,644 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 18:58:02,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:02,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:02,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:03,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 18:58:03,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:03,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 18:58:03,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-21 18:58:04,383 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 18:58:04,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:04,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:04,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283261958] [2023-11-21 18:58:04,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283261958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:04,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:04,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 18:58:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802942695] [2023-11-21 18:58:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:04,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 18:58:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:04,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 18:58:04,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 18:58:04,387 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:08,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-21 18:58:10,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:58:15,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:58:17,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-21 18:58:19,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 18:58:19,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:19,382 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2023-11-21 18:58:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 18:58:19,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 18:58:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:19,571 INFO L225 Difference]: With dead ends: 73 [2023-11-21 18:58:19,571 INFO L226 Difference]: Without dead ends: 47 [2023-11-21 18:58:19,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:58:19,573 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:19,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 138 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 14.4s Time] [2023-11-21 18:58:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-21 18:58:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-11-21 18:58:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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 18:58:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-11-21 18:58:19,587 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 9 [2023-11-21 18:58:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:19,588 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-11-21 18:58:19,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-11-21 18:58:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:58:19,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:19,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:19,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:19,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:58:19,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1969269771, now seen corresponding path program 1 times [2023-11-21 18:58:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028766333] [2023-11-21 18:58:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:19,792 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 18:58:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:19,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:19,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:20,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 18:58:20,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:20,975 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 18:58:20,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:20,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:20,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028766333] [2023-11-21 18:58:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028766333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 18:58:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70368317] [2023-11-21 18:58:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 18:58:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 18:58:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 18:58:20,978 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:21,534 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-11-21 18:58:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 18:58:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 18:58:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:21,536 INFO L225 Difference]: With dead ends: 47 [2023-11-21 18:58:21,536 INFO L226 Difference]: Without dead ends: 13 [2023-11-21 18:58:21,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 18:58:21,538 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:21,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 18:58:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-21 18:58:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-21 18:58:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2023-11-21 18:58:21,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2023-11-21 18:58:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:21,542 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2023-11-21 18:58:21,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2023-11-21 18:58:21,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 18:58:21,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:58:21,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 18:58:21,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:21,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:21,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:58:21,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:58:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1048418817, now seen corresponding path program 1 times [2023-11-21 18:58:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 18:58:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302185091] [2023-11-21 18:58:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:58:21,763 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 18:58:21,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 18:58:21,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:21,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 (5)] Waiting until timeout for monitored process [2023-11-21 18:58:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:58:22,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 18:58:22,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:58:22,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 18:58:24,237 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-21 18:58:24,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-11-21 18:58:24,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 18:58:24,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2023-11-21 18:58:25,203 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 18:58:25,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 18:58:25,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 18:58:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302185091] [2023-11-21 18:58:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302185091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 18:58:25,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 18:58:25,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 18:58:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090357259] [2023-11-21 18:58:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 18:58:25,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 18:58:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 18:58:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 18:58:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 18:58:25,207 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 18:58:27,436 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2023-11-21 18:58:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 18:58:27,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 18:58:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 18:58:27,438 INFO L225 Difference]: With dead ends: 13 [2023-11-21 18:58:27,438 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 18:58:27,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-21 18:58:27,439 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 18:58:27,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 18:58:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 18:58:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 18:58:27,441 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 18:58:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 18:58:27,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2023-11-21 18:58:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 18:58:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 18:58:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 18:58:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 18:58:27,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 18:58:27,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 18:58:27,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 (5)] Forceful destruction successful, exit code 0 [2023-11-21 18:58:27,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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 18:58:27,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 18:58:27,942 INFO L899 garLoopResultBuilder]: For program point __ieee754_acosf_returnLabel#1(lines 92 159) no Hoare annotation was computed. [2023-11-21 18:58:27,942 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2023-11-21 18:58:27,943 INFO L899 garLoopResultBuilder]: For program point L143(lines 143 147) no Hoare annotation was computed. [2023-11-21 18:58:27,943 INFO L895 garLoopResultBuilder]: At program point L143-1(lines 143 147) the Hoare annotation is: false [2023-11-21 18:58:27,943 INFO L899 garLoopResultBuilder]: For program point L143-2(lines 143 147) no Hoare annotation was computed. [2023-11-21 18:58:27,943 INFO L899 garLoopResultBuilder]: For program point L106(lines 106 108) no Hoare annotation was computed. [2023-11-21 18:58:27,943 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 173 189) no Hoare annotation was computed. [2023-11-21 18:58:27,943 INFO L899 garLoopResultBuilder]: For program point L164-1(lines 164 168) no Hoare annotation was computed. [2023-11-21 18:58:27,944 INFO L895 garLoopResultBuilder]: At program point L164-2(lines 164 168) the Hoare annotation is: (and (exists ((|v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___ieee754_acosf_#res#1|) (= (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14|) (_ bv0 32)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) currentRoundingMode 1.0)))) |ULTIMATE.start_main_#t~short15#1| (exists ((|v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= |ULTIMATE.start_main_~res~0#1| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53))) (= (let ((.cse1 (select (select |#memory_int| |v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14|) (_ bv0 32)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) ((_ to_fp 8 24) currentRoundingMode 1.0)))) (exists ((|v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) |ULTIMATE.start___signbit_float_~x#1|) (= (let ((.cse2 (select (select |#memory_int| |v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14|) (_ bv0 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))) ((_ to_fp 8 24) currentRoundingMode 1.0))))) [2023-11-21 18:58:27,944 INFO L899 garLoopResultBuilder]: For program point L164-3(lines 164 168) no Hoare annotation was computed. [2023-11-21 18:58:27,944 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 184) no Hoare annotation was computed. [2023-11-21 18:58:27,944 INFO L895 garLoopResultBuilder]: At program point L136(line 136) the Hoare annotation is: false [2023-11-21 18:58:27,945 INFO L899 garLoopResultBuilder]: For program point L136-1(line 136) no Hoare annotation was computed. [2023-11-21 18:58:27,945 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 18:58:27,945 INFO L899 garLoopResultBuilder]: For program point L95-1(lines 95 99) no Hoare annotation was computed. [2023-11-21 18:58:27,945 INFO L895 garLoopResultBuilder]: At program point L95-2(lines 95 99) the Hoare annotation is: (= |ULTIMATE.start___ieee754_acosf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0)) [2023-11-21 18:58:27,945 INFO L899 garLoopResultBuilder]: For program point L95-3(lines 95 99) no Hoare annotation was computed. [2023-11-21 18:58:27,946 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 18:58:27,946 INFO L895 garLoopResultBuilder]: At program point L129(line 129) the Hoare annotation is: false [2023-11-21 18:58:27,946 INFO L899 garLoopResultBuilder]: For program point L129-1(line 129) no Hoare annotation was computed. [2023-11-21 18:58:27,946 INFO L899 garLoopResultBuilder]: For program point L121(lines 121 158) no Hoare annotation was computed. [2023-11-21 18:58:27,946 INFO L899 garLoopResultBuilder]: For program point L183(line 183) no Hoare annotation was computed. [2023-11-21 18:58:27,946 INFO L899 garLoopResultBuilder]: For program point L183-2(lines 183 186) no Hoare annotation was computed. [2023-11-21 18:58:27,947 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 158) no Hoare annotation was computed. [2023-11-21 18:58:27,947 INFO L899 garLoopResultBuilder]: For program point L138-1(lines 138 142) no Hoare annotation was computed. [2023-11-21 18:58:27,947 INFO L895 garLoopResultBuilder]: At program point L138-2(lines 138 142) the Hoare annotation is: false [2023-11-21 18:58:27,947 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 108) no Hoare annotation was computed. [2023-11-21 18:58:27,947 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2023-11-21 18:58:27,948 INFO L902 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: true [2023-11-21 18:58:27,948 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2023-11-21 18:58:27,948 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 16 81) no Hoare annotation was computed. [2023-11-21 18:58:27,948 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2023-11-21 18:58:27,948 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2023-11-21 18:58:27,948 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2023-11-21 18:58:27,949 INFO L899 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2023-11-21 18:58:27,949 INFO L899 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 16 81) no Hoare annotation was computed. [2023-11-21 18:58:27,949 INFO L902 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: true [2023-11-21 18:58:27,949 INFO L899 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2023-11-21 18:58:27,949 INFO L899 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2023-11-21 18:58:27,949 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 81) the Hoare annotation is: true [2023-11-21 18:58:27,950 INFO L902 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: true [2023-11-21 18:58:27,950 INFO L899 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2023-11-21 18:58:27,950 INFO L902 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: true [2023-11-21 18:58:27,953 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 18:58:27,955 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 18:58:27,966 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~to_fp~32(currentRoundingMode, ~Pluszero~64()) == #res && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated [2023-11-21 18:58:27,967 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated [2023-11-21 18:58:27,967 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~res~0 == ~to_fp~32(currentRoundingMode, ~Pluszero~64()) && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated [2023-11-21 18:58:27,968 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~to_fp~32(currentRoundingMode, ~Pluszero~64()) == ~x && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated [2023-11-21 18:58:27,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 06:58:27 BoogieIcfgContainer [2023-11-21 18:58:27,969 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 18:58:27,970 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:58:27,970 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:58:27,970 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:58:27,970 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:58" (3/4) ... [2023-11-21 18:58:27,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 18:58:27,975 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_sqrtf [2023-11-21 18:58:27,983 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-21 18:58:27,984 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-21 18:58:27,984 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 18:58:27,985 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 18:58:28,092 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 18:58:28,092 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 18:58:28,093 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:58:28,093 INFO L158 Benchmark]: Toolchain (without parser) took 40128.50ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 51.7MB in the beginning and 62.6MB in the end (delta: -11.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,094 INFO L158 Benchmark]: CDTParser took 1.32ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:58:28,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.57ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 51.5MB in the beginning and 74.9MB in the end (delta: -23.4MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.29ms. Allocated memory is still 96.5MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,095 INFO L158 Benchmark]: Boogie Preprocessor took 102.83ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,095 INFO L158 Benchmark]: RCFGBuilder took 10404.33ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 65.4MB in the end (delta: 5.0MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,095 INFO L158 Benchmark]: TraceAbstraction took 28992.51ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 68.9MB in the end (delta: -4.4MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,096 INFO L158 Benchmark]: Witness Printer took 122.82ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 62.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 18:58:28,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.57ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 51.5MB in the beginning and 74.9MB in the end (delta: -23.4MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.29ms. Allocated memory is still 96.5MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.83ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 70.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 10404.33ms. Allocated memory is still 96.5MB. Free memory was 70.4MB in the beginning and 65.4MB in the end (delta: 5.0MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28992.51ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 68.9MB in the end (delta: -4.4MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Witness Printer took 122.82ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 62.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~to_fp~32(currentRoundingMode, ~Pluszero~64()) == #res && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~res~0 == ~to_fp~32(currentRoundingMode, ~Pluszero~64()) && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14 : bv32, currentRoundingMode : FloatRoundingMode :: ~to_fp~32(currentRoundingMode, ~Pluszero~64()) == ~x && ~fp~32(#memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start___ieee754_acosf_~#gf_u~1#1.base_14][0bv32][22:0]) == ~to_fp~32(currentRoundingMode, 1.0)) could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 184]: 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, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 18.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 217 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 87 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 26 PreInvPairs, 28 NumberOfFragments, 106 HoareAnnotationTreeSize, 26 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 13 QuantifiedInterpolants, 361 SizeOfPredicates, 31 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 164]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-21 18:58:28,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78edf05a-ac59-49d9-8c90-10c26ff9938b/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