./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire --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 9e92930e750196482f17f07849312ddc82a1b9515fee56924e2c0ca266f21be0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:06,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:06,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:08:06,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:06,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:06,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:06,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:06,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:06,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:06,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:06,416 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:06,416 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:06,417 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:06,419 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:06,419 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:06,420 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:06,420 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:06,421 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:06,421 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:06,422 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:06,422 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:06,423 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:06,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:06,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:06,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:06,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:06,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:06,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:06,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:06,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:06,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:06,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:06,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:06,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:06,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:06,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:06,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:06,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:06,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:06,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:06,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:06,455 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:06,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:06,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:06,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:06,456 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:06,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:06,457 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e92930e750196482f17f07849312ddc82a1b9515fee56924e2c0ca266f21be0 [2023-11-23 21:08:06,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:06,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:06,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:06,817 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:06,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:06,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:09,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:10,151 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:10,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:10,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/8b5abcd2d/ab3d4b5b6cde4930ab71543ce8cf2a65/FLAG02e6c3195 [2023-11-23 21:08:10,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/8b5abcd2d/ab3d4b5b6cde4930ab71543ce8cf2a65 [2023-11-23 21:08:10,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:10,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:10,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:10,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:10,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:10,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c68fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10, skipping insertion in model container [2023-11-23 21:08:10,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:10,378 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i[917,930] [2023-11-23 21:08:10,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:10,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:10,458 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i[917,930] [2023-11-23 21:08:10,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:10,504 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:10,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10 WrapperNode [2023-11-23 21:08:10,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:10,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:10,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:10,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:10,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,548 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-11-23 21:08:10,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:10,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:10,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:10,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:10,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,580 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:10,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:10,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:10,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:10,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (1/1) ... [2023-11-23 21:08:10,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:10,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:10,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:10,733 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:10,736 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:11,022 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:11,235 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:11,236 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:08:11,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:11 BoogieIcfgContainer [2023-11-23 21:08:11,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:11,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:11,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:11,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:11,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:10" (1/3) ... [2023-11-23 21:08:11,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60167e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:11, skipping insertion in model container [2023-11-23 21:08:11,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:10" (2/3) ... [2023-11-23 21:08:11,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60167e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:11, skipping insertion in model container [2023-11-23 21:08:11,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:11" (3/3) ... [2023-11-23 21:08:11,257 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:11,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:11,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:11,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:11,340 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;@2456cf22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:11,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:08:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:08:11,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,358 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:11,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:11,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 60004544, now seen corresponding path program 1 times [2023-11-23 21:08:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795931874] [2023-11-23 21:08:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:08:11,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:08:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:08:11,835 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:08:11,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:08:11,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:08:11,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:08:11,850 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:08:11,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:08:11,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:08:11 BoogieIcfgContainer [2023-11-23 21:08:11,897 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:08:11,898 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:08:11,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:08:11,898 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:08:11,899 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:11" (3/4) ... [2023-11-23 21:08:11,902 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:08:11,903 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:08:11,904 INFO L158 Benchmark]: Toolchain (without parser) took 1729.45ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 85.8MB in the beginning and 119.9MB in the end (delta: -34.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-23 21:08:11,904 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:08:11,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.08ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 73.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:08:11,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.63ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:08:11,907 INFO L158 Benchmark]: Boogie Preprocessor took 31.05ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:08:11,907 INFO L158 Benchmark]: RCFGBuilder took 657.00ms. Allocated memory is still 121.6MB. Free memory was 70.4MB in the beginning and 91.8MB in the end (delta: -21.3MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2023-11-23 21:08:11,908 INFO L158 Benchmark]: TraceAbstraction took 657.96ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 91.1MB in the beginning and 119.9MB in the end (delta: -28.8MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-11-23 21:08:11,909 INFO L158 Benchmark]: Witness Printer took 5.13ms. Allocated memory is still 169.9MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:08:11,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.08ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 73.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.63ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 71.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.05ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 657.00ms. Allocated memory is still 121.6MB. Free memory was 70.4MB in the beginning and 91.8MB in the end (delta: -21.3MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * TraceAbstraction took 657.96ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 91.1MB in the beginning and 119.9MB in the end (delta: -28.8MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Witness Printer took 5.13ms. Allocated memory is still 169.9MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of someUnaryDOUBLEoperation at line 53. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 24.575; [L23] double var_1_8 = 3.5; [L24] signed char var_1_9 = 16; [L25] signed char var_1_10 = 16; [L26] signed char var_1_11 = 4; [L27] signed long int var_1_12 = 8; [L28] unsigned char var_1_13 = 1; [L29] unsigned char var_1_14 = 1; [L30] double var_1_15 = 3.8; [L31] signed long int last_1_var_1_12 = 8; [L85] isInitial = 1 [L86] FCALL initially() [L87] COND TRUE 1 [L88] CALL updateLastVariables() [L78] last_1_var_1_12 = var_1_12 [L88] RET updateLastVariables() [L89] CALL updateVariables() [L62] var_1_8 = __VERIFIER_nondet_double() [L63] CALL assume_abort_if_not((var_1_8 >= -922337.2036854765600e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854765600e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=16, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_8 >= -922337.2036854765600e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854765600e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=16, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L64] var_1_10 = __VERIFIER_nondet_char() [L65] CALL assume_abort_if_not(var_1_10 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_10 >= -63) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L66] CALL assume_abort_if_not(var_1_10 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_10 <= 63) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=4, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L67] var_1_11 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_11 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_11 >= -63) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L69] CALL assume_abort_if_not(var_1_11 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_11 <= 63) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=1, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L70] var_1_13 = __VERIFIER_nondet_uchar() [L71] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L72] CALL assume_abort_if_not(var_1_13 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_13 <= 1) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_14=1, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L73] var_1_14 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L75] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_14=0, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=8, var_1_13=0, var_1_14=0, var_1_15=19/5, var_1_1=983/40, var_1_9=16] [L89] RET updateVariables() [L90] CALL step() [L35] COND FALSE !(-4 > last_1_var_1_12) [L40] var_1_9 = var_1_10 [L42] unsigned char stepLocal_0 = ! var_1_13; [L43] COND TRUE stepLocal_0 || var_1_14 [L44] COND TRUE ! var_1_14 [L45] var_1_12 = (((((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))) < 0 ) ? -((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))) : ((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))))) [L50] var_1_15 = var_1_8 [L51] COND TRUE var_1_15 <= var_1_15 [L52] COND TRUE (var_1_12 + var_1_12) >= (var_1_12 + var_1_9) [L53] var_1_1 = ((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8))) [L90] RET step() [L91] CALL, EXPR property() [L81-L82] return ((((var_1_15 <= var_1_15) ? (((var_1_12 + var_1_12) >= (var_1_12 + var_1_9)) ? (var_1_1 == ((double) ((((var_1_8) < 0 ) ? -(var_1_8) : (var_1_8))))) : 1) : ((var_1_12 > var_1_9) ? (var_1_1 == ((double) var_1_8)) : 1)) && ((-4 > last_1_var_1_12) ? (((~ last_1_var_1_12) <= last_1_var_1_12) ? (var_1_9 == ((signed char) ((((var_1_10 + var_1_11) < 0 ) ? -(var_1_10 + var_1_11) : (var_1_10 + var_1_11))))) : 1) : (var_1_9 == ((signed char) var_1_10)))) && (((! var_1_13) || var_1_14) ? ((! var_1_14) ? (var_1_12 == ((signed long int) (((((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))) < 0 ) ? -((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))) : ((((var_1_9) < (var_1_9)) ? (var_1_9) : (var_1_9))))))) : (var_1_12 == ((signed long int) var_1_9))) : 1)) && (var_1_15 == ((double) var_1_8)) ; [L91] RET, EXPR property() [L91] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=0, var_1_14=0, var_1_15=983/40, var_1_1=983/40, var_1_8=983/40, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=8, var_1_10=0, var_1_11=0, var_1_12=0, var_1_13=0, var_1_14=0, var_1_15=983/40, var_1_1=983/40, var_1_8=983/40, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:08:11,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire --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 9e92930e750196482f17f07849312ddc82a1b9515fee56924e2c0ca266f21be0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:14,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:14,826 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:08:14,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:14,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:14,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:14,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:14,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:14,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:14,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:14,893 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:14,894 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:14,895 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:14,897 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:14,897 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:14,898 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:14,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:14,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:14,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:14,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:14,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:14,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:14,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:14,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:14,904 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:08:14,904 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:08:14,905 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:08:14,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:14,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:14,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:14,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:14,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:08:14,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:14,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:14,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:14,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:14,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:14,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:14,911 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:08:14,913 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:08:14,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:14,914 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:14,914 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:14,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:14,915 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e92930e750196482f17f07849312ddc82a1b9515fee56924e2c0ca266f21be0 [2023-11-23 21:08:15,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:15,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:15,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:15,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:15,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:15,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:18,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:18,939 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:18,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:18,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/f8b2e8dc4/30367e5ad7ed41d4b808239a095c3b0c/FLAG4eb3f14c1 [2023-11-23 21:08:18,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/data/f8b2e8dc4/30367e5ad7ed41d4b808239a095c3b0c [2023-11-23 21:08:18,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:18,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:18,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:18,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:18,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:18,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:18" (1/1) ... [2023-11-23 21:08:18,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47646ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:18, skipping insertion in model container [2023-11-23 21:08:18,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:18" (1/1) ... [2023-11-23 21:08:19,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:19,205 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i[917,930] [2023-11-23 21:08:19,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:19,268 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:19,282 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_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-47.i[917,930] [2023-11-23 21:08:19,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:19,324 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:19,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19 WrapperNode [2023-11-23 21:08:19,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:19,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:19,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:19,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:19,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,375 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2023-11-23 21:08:19,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:19,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:19,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:19,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:19,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:19,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:19,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:19,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:19,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (1/1) ... [2023-11-23 21:08:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:19,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:19,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:08:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:19,626 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:19,629 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:19,879 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:19,951 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:19,951 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:08:19,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:19 BoogieIcfgContainer [2023-11-23 21:08:19,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:19,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:19,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:19,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:19,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:18" (1/3) ... [2023-11-23 21:08:19,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5267e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:19, skipping insertion in model container [2023-11-23 21:08:19,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:19" (2/3) ... [2023-11-23 21:08:19,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5267e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:19, skipping insertion in model container [2023-11-23 21:08:19,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:19" (3/3) ... [2023-11-23 21:08:19,966 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-47.i [2023-11-23 21:08:19,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:19,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:20,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:20,063 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;@56616023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:20,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:08:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:08:20,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:20,081 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:20,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:20,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1720123119, now seen corresponding path program 1 times [2023-11-23 21:08:20,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:20,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31513272] [2023-11-23 21:08:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:20,109 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 [2023-11-23 21:08:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:20,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:08:20,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:20,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:08:20,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 21:08:20,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:20,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31513272] [2023-11-23 21:08:20,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31513272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823592322] [2023-11-23 21:08:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:20,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:08:20,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:20,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:08:20,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:08:20,471 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:20,537 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2023-11-23 21:08:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:08:20,541 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2023-11-23 21:08:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:20,550 INFO L225 Difference]: With dead ends: 69 [2023-11-23 21:08:20,550 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 21:08:20,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:08:20,560 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 21:08:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-23 21:08:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:08:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2023-11-23 21:08:20,598 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 61 [2023-11-23 21:08:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:20,599 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2023-11-23 21:08:20,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:08:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2023-11-23 21:08:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:08:20,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:20,603 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:20,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:20,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash -663846671, now seen corresponding path program 1 times [2023-11-23 21:08:20,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:20,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834563390] [2023-11-23 21:08:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:20,811 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 [2023-11-23 21:08:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:20,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:08:20,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:20,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:08:20,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 21:08:22,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 21:08:23,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834563390] [2023-11-23 21:08:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834563390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [74281875] [2023-11-23 21:08:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:23,303 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:08:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:08:23,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:08:23,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:08:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:23,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:08:23,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 21:08:25,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 21:08:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [74281875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759687443] [2023-11-23 21:08:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:25,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:08:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:26,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:08:26,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 21:08:27,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 21:08:28,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759687443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:28,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:08:28,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2023-11-23 21:08:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287580258] [2023-11-23 21:08:28,132 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:08:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:08:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:08:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:08:28,138 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 21:08:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:29,208 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2023-11-23 21:08:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:08:29,210 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) Word has length 61 [2023-11-23 21:08:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:29,212 INFO L225 Difference]: With dead ends: 72 [2023-11-23 21:08:29,212 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:08:29,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:08:29,215 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 124 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:29,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 91 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:08:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:08:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-11-23 21:08:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:08:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2023-11-23 21:08:29,229 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 61 [2023-11-23 21:08:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:29,230 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2023-11-23 21:08:29,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-23 21:08:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2023-11-23 21:08:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 21:08:29,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:29,234 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:29,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:29,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:29,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:08:29,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -671413585, now seen corresponding path program 1 times [2023-11-23 21:08:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604171609] [2023-11-23 21:08:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:29,850 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 [2023-11-23 21:08:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:29,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:08:29,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31a9e0b-37f9-41ee-83bd-7a1cb04d4500/bin/utaipan-verify-mE87zJ7Ire/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 (6)] Waiting until timeout for monitored process [2023-11-23 21:08:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:29,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:08:29,981 INFO L285 TraceCheckSpWp]: Computing forward predicates...