./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh --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 384bac4055c502051af9511b4aacc64193ea24cf100027b947c84870f94aa671 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:07:35,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:07:35,845 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:07:35,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:07:35,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:07:35,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:07:35,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:07:35,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:07:35,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:07:35,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:07:35,879 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:07:35,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:07:35,880 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:07:35,880 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:07:35,881 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:07:35,881 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:07:35,881 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:07:35,882 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:07:35,882 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:07:35,883 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:07:35,883 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:07:35,886 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:07:35,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:07:35,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:07:35,888 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:07:35,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:07:35,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:07:35,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:07:35,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:07:35,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:07:35,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:07:35,890 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:07:35,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:07:35,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:07:35,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:07:35,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:07:35,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:07:35,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:35,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:07:35,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:07:35,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:07:35,892 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:07:35,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:07:35,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:07:35,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:07:35,893 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:07:35,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:07:35,893 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384bac4055c502051af9511b4aacc64193ea24cf100027b947c84870f94aa671 [2023-12-02 13:07:36,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:07:36,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:07:36,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:07:36,136 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:07:36,136 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:07:36,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:38,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:07:39,080 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:07:39,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:39,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/7f09af900/7b399a80bc1c43b2b1488fba6ba299c0/FLAGf316591e0 [2023-12-02 13:07:39,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/7f09af900/7b399a80bc1c43b2b1488fba6ba299c0 [2023-12-02 13:07:39,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:07:39,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:07:39,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:39,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:07:39,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:07:39,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637ccbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39, skipping insertion in model container [2023-12-02 13:07:39,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,145 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:07:39,291 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i[916,929] [2023-12-02 13:07:39,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:39,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:07:39,354 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i[916,929] [2023-12-02 13:07:39,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:39,388 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:07:39,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39 WrapperNode [2023-12-02 13:07:39,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:39,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:39,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:07:39,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:07:39,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,432 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-12-02 13:07:39,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:39,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:07:39,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:07:39,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:07:39,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:07:39,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:07:39,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:07:39,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:07:39,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (1/1) ... [2023-12-02 13:07:39,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:39,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:39,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:07:39,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:07:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:07:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:07:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:07:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:07:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:07:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:07:39,599 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:07:39,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:07:39,803 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:07:39,888 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:07:39,888 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:07:39,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:39 BoogieIcfgContainer [2023-12-02 13:07:39,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:07:39,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:07:39,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:07:39,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:07:39,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:07:39" (1/3) ... [2023-12-02 13:07:39,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cedcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:39, skipping insertion in model container [2023-12-02 13:07:39,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:39" (2/3) ... [2023-12-02 13:07:39,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cedcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:39, skipping insertion in model container [2023-12-02 13:07:39,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:39" (3/3) ... [2023-12-02 13:07:39,897 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:39,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:07:39,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:07:39,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:07:39,955 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;@63b73802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:07:39,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:07:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:07:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 13:07:39,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:39,968 INFO L195 NwaCegarLoop]: trace histogram [12, 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] [2023-12-02 13:07:39,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:39,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -647963468, now seen corresponding path program 1 times [2023-12-02 13:07:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274823868] [2023-12-02 13:07:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:07:40,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:07:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:07:40,297 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:07:40,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:07:40,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:07:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:07:40,307 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:07:40,311 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:07:40,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:07:40 BoogieIcfgContainer [2023-12-02 13:07:40,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:07:40,358 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:07:40,358 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:07:40,359 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:07:40,359 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:39" (3/4) ... [2023-12-02 13:07:40,361 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:07:40,362 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:07:40,364 INFO L158 Benchmark]: Toolchain (without parser) took 1255.16ms. Allocated memory is still 192.9MB. Free memory was 163.3MB in the beginning and 97.5MB in the end (delta: 65.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-12-02 13:07:40,364 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:07:40,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.56ms. Allocated memory is still 192.9MB. Free memory was 163.3MB in the beginning and 150.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:07:40,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.17ms. Allocated memory is still 192.9MB. Free memory was 150.7MB in the beginning and 147.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 13:07:40,366 INFO L158 Benchmark]: Boogie Preprocessor took 28.69ms. Allocated memory is still 192.9MB. Free memory was 147.8MB in the beginning and 146.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:07:40,367 INFO L158 Benchmark]: RCFGBuilder took 427.56ms. Allocated memory is still 192.9MB. Free memory was 146.5MB in the beginning and 123.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 13:07:40,367 INFO L158 Benchmark]: TraceAbstraction took 465.41ms. Allocated memory is still 192.9MB. Free memory was 123.5MB in the beginning and 97.5MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 13:07:40,368 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 192.9MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:07:40,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.56ms. Allocated memory is still 192.9MB. Free memory was 163.3MB in the beginning and 150.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.17ms. Allocated memory is still 192.9MB. Free memory was 150.7MB in the beginning and 147.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.69ms. Allocated memory is still 192.9MB. Free memory was 147.8MB in the beginning and 146.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.56ms. Allocated memory is still 192.9MB. Free memory was 146.5MB in the beginning and 123.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 465.41ms. Allocated memory is still 192.9MB. Free memory was 123.5MB in the beginning and 97.5MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 192.9MB. Free memory is still 97.5MB. 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 to_int at line 37. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = -1; [L23] unsigned char var_1_8 = 5; [L24] unsigned char var_1_9 = 4; [L25] signed long int var_1_10 = 16; [L26] signed long int var_1_11 = 127; [L27] unsigned char var_1_12 = 1; [L28] unsigned char var_1_13 = 0; [L29] unsigned char var_1_15 = 0; [L30] unsigned char var_1_16 = 0; [L31] unsigned char var_1_17 = 0; [L32] unsigned char var_1_18 = 0; [L87] isInitial = 1 [L88] FCALL initially() [L89] COND TRUE 1 [L90] FCALL updateLastVariables() [L91] CALL updateVariables() [L61] var_1_9 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=127, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_10=16, var_1_11=127, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5] [L63] CALL assume_abort_if_not(var_1_9 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=127, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_9 <= 127) VAL [isInitial=1, var_1_10=16, var_1_11=127, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L64] var_1_11 = __VERIFIER_nondet_long() [L65] CALL assume_abort_if_not(var_1_11 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_11 >= -2147483648) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L66] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L67] var_1_13 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L69] CALL assume_abort_if_not(var_1_13 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_13 <= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L70] var_1_15 = __VERIFIER_nondet_uchar() [L71] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L72] CALL assume_abort_if_not(var_1_15 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_15 <= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L73] var_1_16 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L75] CALL assume_abort_if_not(var_1_16 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_16 <= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L76] var_1_18 = __VERIFIER_nondet_uchar() [L77] CALL assume_abort_if_not(var_1_18 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_18 >= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L78] CALL assume_abort_if_not(var_1_18 <= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_18 <= 0) VAL [isInitial=1, var_1_10=16, var_1_11=1, var_1_12=1, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=-1, var_1_8=5, var_1_9=127] [L91] RET updateVariables() [L92] CALL step() [L36] var_1_8 = (var_1_9 + 100) [L37] var_1_10 = ((((var_1_11) < (64.15f)) ? (var_1_11) : (64.15f))) [L38] COND FALSE !(var_1_8 > var_1_8) [L41] var_1_1 = (((((var_1_8 - var_1_8)) > ((var_1_8 - var_1_8))) ? ((var_1_8 - var_1_8)) : ((var_1_8 - var_1_8)))) [L43] COND TRUE var_1_11 <= var_1_10 [L44] COND TRUE var_1_1 != var_1_8 [L45] var_1_17 = var_1_18 [L54] COND FALSE !((- var_1_10) > var_1_11) [L57] var_1_12 = ((var_1_1 <= var_1_9) && var_1_16) [L92] RET step() [L93] CALL, EXPR property() [L83-L84] return (((((var_1_8 > var_1_8) ? (var_1_1 == ((signed long int) (((((var_1_8) < (var_1_8)) ? (var_1_8) : (var_1_8))) - 10))) : (var_1_1 == ((signed long int) (((((var_1_8 - var_1_8)) > ((var_1_8 - var_1_8))) ? ((var_1_8 - var_1_8)) : ((var_1_8 - var_1_8))))))) && (var_1_8 == ((unsigned char) (var_1_9 + 100)))) && (var_1_10 == ((signed long int) ((((var_1_11) < (64.15f)) ? (var_1_11) : (64.15f)))))) && (((- var_1_10) > var_1_11) ? (var_1_12 == ((unsigned char) (var_1_13 || (var_1_17 && (var_1_15 || var_1_16))))) : (var_1_12 == ((unsigned char) ((var_1_1 <= var_1_9) && var_1_16))))) && ((var_1_11 <= var_1_10) ? ((var_1_1 != var_1_8) ? (var_1_17 == ((unsigned char) var_1_18)) : 1) : ((var_1_8 <= 1000000) ? (var_1_17 == ((unsigned char) 0)) : (var_1_17 == ((unsigned char) 0)))) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=1, var_1_11=1, var_1_12=0, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=0, var_1_8=227, var_1_9=127] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=1, var_1_11=1, var_1_12=0, var_1_13=0, var_1_15=0, var_1_16=0, var_1_17=0, var_1_18=0, var_1_1=0, var_1_8=227, var_1_9=127] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 12, 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=27occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 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 [2023-12-02 13:07:40,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh --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 384bac4055c502051af9511b4aacc64193ea24cf100027b947c84870f94aa671 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:07:42,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:07:42,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 13:07:42,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:07:42,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:07:42,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:07:42,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:07:42,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:07:42,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:07:42,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:07:42,496 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:07:42,497 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:07:42,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:07:42,498 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:07:42,499 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:07:42,499 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:07:42,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:07:42,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:07:42,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:07:42,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:07:42,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:07:42,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:07:42,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:07:42,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:07:42,504 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:07:42,505 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:07:42,505 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:07:42,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:07:42,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:07:42,506 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:07:42,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:07:42,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:07:42,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:07:42,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:07:42,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:42,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:07:42,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:07:42,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:07:42,509 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:07:42,509 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:07:42,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:07:42,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:07:42,510 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:07:42,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:07:42,510 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384bac4055c502051af9511b4aacc64193ea24cf100027b947c84870f94aa671 [2023-12-02 13:07:42,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:07:42,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:07:42,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:07:42,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:07:42,801 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:07:42,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:45,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:07:45,759 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:07:45,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:45,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/1d5ca4926/e439446eea554d1f9ad6c16df4017b6c/FLAGca22cb209 [2023-12-02 13:07:45,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/data/1d5ca4926/e439446eea554d1f9ad6c16df4017b6c [2023-12-02 13:07:45,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:07:45,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:07:45,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:45,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:07:45,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:07:45,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:45" (1/1) ... [2023-12-02 13:07:45,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d12a249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:45, skipping insertion in model container [2023-12-02 13:07:45,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:45" (1/1) ... [2023-12-02 13:07:45,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:07:45,955 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i[916,929] [2023-12-02 13:07:45,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:46,006 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:07:46,016 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_2592463f-f785-4bb4-bb2d-6407827ba1e6/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-42.i[916,929] [2023-12-02 13:07:46,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:07:46,053 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:07:46,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46 WrapperNode [2023-12-02 13:07:46,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:07:46,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:46,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:07:46,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:07:46,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,093 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-12-02 13:07:46,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:07:46,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:07:46,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:07:46,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:07:46,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:07:46,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:07:46,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:07:46,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:07:46,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (1/1) ... [2023-12-02 13:07:46,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:07:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:46,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:07:46,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:07:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:07:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:07:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:07:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:07:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:07:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:07:46,262 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:07:46,264 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:07:47,132 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:07:47,187 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:07:47,187 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:07:47,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:47 BoogieIcfgContainer [2023-12-02 13:07:47,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:07:47,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:07:47,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:07:47,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:07:47,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:07:45" (1/3) ... [2023-12-02 13:07:47,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a45daa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:47, skipping insertion in model container [2023-12-02 13:07:47,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:46" (2/3) ... [2023-12-02 13:07:47,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a45daa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:47, skipping insertion in model container [2023-12-02 13:07:47,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:47" (3/3) ... [2023-12-02 13:07:47,198 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-42.i [2023-12-02 13:07:47,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:07:47,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:07:47,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:07:47,260 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;@6387ce6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:07:47,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:07:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:07:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:07:47,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:47,275 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1] [2023-12-02 13:07:47,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:47,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1346753530, now seen corresponding path program 1 times [2023-12-02 13:07:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:07:47,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405413992] [2023-12-02 13:07:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:47,292 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 [2023-12-02 13:07:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:07:47,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:07:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:07:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:47,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:07:47,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-02 13:07:47,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:07:47,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:07:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405413992] [2023-12-02 13:07:47,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405413992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:47,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:07:47,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749515694] [2023-12-02 13:07:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:47,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:07:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:07:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:07:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:07:47,516 INFO L87 Difference]: Start difference. First operand has 36 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:07:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:47,792 INFO L93 Difference]: Finished difference Result 69 states and 120 transitions. [2023-12-02 13:07:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:07:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-12-02 13:07:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:47,811 INFO L225 Difference]: With dead ends: 69 [2023-12-02 13:07:47,811 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 13:07:47,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:07:47,818 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:47,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:07:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 13:07:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-02 13:07:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:07:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2023-12-02 13:07:47,860 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 75 [2023-12-02 13:07:47,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:47,861 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2023-12-02 13:07:47,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:07:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2023-12-02 13:07:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:07:47,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:47,865 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1] [2023-12-02 13:07:47,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:07:48,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:07:48,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:07:48,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1666478716, now seen corresponding path program 1 times [2023-12-02 13:07:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:07:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894305939] [2023-12-02 13:07:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:48,072 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 [2023-12-02 13:07:48,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:07:48,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:07:48,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:07:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:07:48,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:07:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:07:48,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-02 13:07:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [148114783] [2023-12-02 13:07:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:48,261 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:07:48,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:07:48,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:07:48,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:07:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:48,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:07:48,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:28,117 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:08:55,750 WARN L293 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:09:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 141 proven. 18 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-02 13:09:03,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:53,342 WARN L293 SmtUtils]: Spent 41.62s on a formula simplification. DAG size of input: 164 DAG size of output: 149 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:14:31,966 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:14:48,199 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:15:06,827 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:15:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-02 13:15:21,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:15:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894305939] [2023-12-02 13:15:21,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:15:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [148114783] [2023-12-02 13:15:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [148114783] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 13:15:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:15:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-02 13:15:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236657531] [2023-12-02 13:15:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:15:21,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:15:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:15:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:15:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2023-12-02 13:15:21,108 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:15:25,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:15:26,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:15:48,349 WARN L293 SmtUtils]: Spent 13.52s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:15:58,961 WARN L293 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:16:07,761 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:16:09,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:16:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:16:09,595 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2023-12-02 13:16:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:16:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-12-02 13:16:09,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:16:09,605 INFO L225 Difference]: With dead ends: 47 [2023-12-02 13:16:09,605 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 13:16:09,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 173.7s TimeCoverageRelationStatistics Valid=95, Invalid=284, Unknown=1, NotChecked=0, Total=380 [2023-12-02 13:16:09,607 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:16:09,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 105 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-02 13:16:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 13:16:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2023-12-02 13:16:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:16:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2023-12-02 13:16:09,618 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 75 [2023-12-02 13:16:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:16:09,620 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2023-12-02 13:16:09,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:16:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-12-02 13:16:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:16:09,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:16:09,622 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1] [2023-12-02 13:16:09,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 13:16:09,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 13:16:10,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:16:10,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:16:10,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:16:10,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1666538298, now seen corresponding path program 1 times [2023-12-02 13:16:10,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:16:10,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961429835] [2023-12-02 13:16:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:10,024 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 [2023-12-02 13:16:10,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:16:10,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:16:10,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:16:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:16:10,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:16:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:16:10,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-02 13:16:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1451456883] [2023-12-02 13:16:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:10,155 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:16:10,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:16:10,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:16:10,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 13:16:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:10,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:16:10,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:01,171 WARN L293 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-02 13:20:23,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:20:23,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:20:23,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961429835] [2023-12-02 13:20:23,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:20:23,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1451456883] [2023-12-02 13:20:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1451456883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:20:23,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:20:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 13:20:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754233887] [2023-12-02 13:20:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:20:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:20:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:20:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:20:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:20:23,488 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:20:33,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:20:44,876 WARN L293 SmtUtils]: Spent 7.51s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:20:47,634 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2023-12-02 13:20:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:20:47,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-12-02 13:20:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:20:47,643 INFO L225 Difference]: With dead ends: 46 [2023-12-02 13:20:47,644 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 13:20:47,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:20:47,645 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:20:47,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 163 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2023-12-02 13:20:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 13:20:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2023-12-02 13:20:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:20:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2023-12-02 13:20:47,655 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 75 [2023-12-02 13:20:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:20:47,656 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2023-12-02 13:20:47,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-02 13:20:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-12-02 13:20:47,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:20:47,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:20:47,658 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1] [2023-12-02 13:20:47,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 13:20:47,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 13:20:48,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:20:48,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:20:48,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:20:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1431904382, now seen corresponding path program 1 times [2023-12-02 13:20:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:20:48,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199909408] [2023-12-02 13:20:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:20:48,060 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 [2023-12-02 13:20:48,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:20:48,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:20:48,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 (7)] Waiting until timeout for monitored process [2023-12-02 13:20:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:20:48,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:20:48,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:20:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-02 13:20:48,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:20:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:20:48,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:20:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199909408] [2023-12-02 13:20:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199909408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:20:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291737991] [2023-12-02 13:20:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:20:48,516 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:20:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:20:48,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:20:48,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 13:20:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:20:48,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:20:48,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:20:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-02 13:20:48,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:20:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:20:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291737991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:20:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733524253] [2023-12-02 13:20:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:20:48,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:20:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:20:48,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:20:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:20:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:20:48,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:20:48,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:20:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-02 13:20:49,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:20:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:20:49,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733524253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:20:49,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:20:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 13:20:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675637107] [2023-12-02 13:20:49,198 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:20:49,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:20:49,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:20:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:20:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 13:20:49,200 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-02 13:20:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:20:50,657 INFO L93 Difference]: Finished difference Result 113 states and 152 transitions. [2023-12-02 13:20:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 13:20:50,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 75 [2023-12-02 13:20:50,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:20:50,659 INFO L225 Difference]: With dead ends: 113 [2023-12-02 13:20:50,660 INFO L226 Difference]: Without dead ends: 77 [2023-12-02 13:20:50,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2023-12-02 13:20:50,662 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 72 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:20:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 97 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:20:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-02 13:20:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2023-12-02 13:20:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:20:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2023-12-02 13:20:50,677 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 75 [2023-12-02 13:20:50,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:20:50,678 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2023-12-02 13:20:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-02 13:20:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2023-12-02 13:20:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 13:20:50,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:20:50,680 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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, 1, 1, 1, 1, 1] [2023-12-02 13:20:50,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 13:20:50,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 13:20:51,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 (7)] Ended with exit code 0 [2023-12-02 13:20:51,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:20:51,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:20:51,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:20:51,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1430057340, now seen corresponding path program 1 times [2023-12-02 13:20:51,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:20:51,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414390434] [2023-12-02 13:20:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:20:51,283 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 [2023-12-02 13:20:51,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:20:51,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:20:51,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/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 (10)] Waiting until timeout for monitored process [2023-12-02 13:20:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:20:51,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:20:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:20:51,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-02 13:20:51,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [958174354] [2023-12-02 13:20:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:20:51,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:20:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:20:51,428 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:20:51,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2592463f-f785-4bb4-bb2d-6407827ba1e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 13:20:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:20:51,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 13:20:51,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:21:58,369 WARN L293 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:22:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 186 proven. 27 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 13:22:09,588 INFO L327 TraceCheckSpWp]: Computing backward predicates...