./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:30,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:30,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:10:30,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:30,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:30,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:30,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:30,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:30,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:30,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:30,910 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:30,911 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:30,912 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:30,914 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:30,914 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:30,915 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:30,915 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:30,915 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:30,916 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:30,916 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:30,917 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:30,918 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:30,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:30,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:30,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:30,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:30,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:30,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:30,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:30,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:30,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:30,924 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:30,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:30,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:30,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:30,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:30,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:30,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:30,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:30,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:30,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:30,927 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:30,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:30,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:30,928 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:30,928 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:30,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:30,929 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 [2023-11-23 21:10:31,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:31,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:31,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:31,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:31,266 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:31,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2023-11-23 21:10:34,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:34,462 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:34,463 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2023-11-23 21:10:34,472 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/c48a5723c/91b2352c1b6f49baada3dab36e203bdb/FLAG6cc3bd1f3 [2023-11-23 21:10:34,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/c48a5723c/91b2352c1b6f49baada3dab36e203bdb [2023-11-23 21:10:34,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:34,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:34,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:34,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:34,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:34,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465af66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34, skipping insertion in model container [2023-11-23 21:10:34,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:34,716 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2023-11-23 21:10:34,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:34,749 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:34,765 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2023-11-23 21:10:34,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:34,785 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:34,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34 WrapperNode [2023-11-23 21:10:34,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:34,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:34,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:34,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:34,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,819 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2023-11-23 21:10:34,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:34,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:34,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:34,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:34,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:34,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:34,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:34,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:34,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (1/1) ... [2023-11-23 21:10:34,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:34,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:34,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:10:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:10:34,994 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:34,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:35,113 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:35,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:35,159 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:10:35,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:35 BoogieIcfgContainer [2023-11-23 21:10:35,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:35,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:35,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:35,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:35,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:34" (1/3) ... [2023-11-23 21:10:35,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f26d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:35, skipping insertion in model container [2023-11-23 21:10:35,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:34" (2/3) ... [2023-11-23 21:10:35,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f26d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:35, skipping insertion in model container [2023-11-23 21:10:35,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:35" (3/3) ... [2023-11-23 21:10:35,170 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2023-11-23 21:10:35,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:35,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:10:35,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:35,251 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;@3714b962, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:35,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:10:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:10:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:10:35,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:35,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:10:35,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:35,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1843522412, now seen corresponding path program 1 times [2023-11-23 21:10:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:35,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693549815] [2023-11-23 21:10:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:35,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:10:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:35,464 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:10:35,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:10:35,471 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:10:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:10:35,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:10:35,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:10:35,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:10:35 BoogieIcfgContainer [2023-11-23 21:10:35,509 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:10:35,512 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:10:35,512 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:10:35,512 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:10:35,513 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:35" (3/4) ... [2023-11-23 21:10:35,515 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:10:35,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:10:35,519 INFO L158 Benchmark]: Toolchain (without parser) took 1027.21ms. Allocated memory is still 119.5MB. Free memory was 76.8MB in the beginning and 62.9MB in the end (delta: 13.9MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,520 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:10:35,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.65ms. Allocated memory is still 119.5MB. Free memory was 76.2MB in the beginning and 91.1MB in the end (delta: -14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.35ms. Allocated memory is still 119.5MB. Free memory was 91.1MB in the beginning and 89.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,525 INFO L158 Benchmark]: Boogie Preprocessor took 25.27ms. Allocated memory is still 119.5MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,529 INFO L158 Benchmark]: RCFGBuilder took 311.84ms. Allocated memory is still 119.5MB. Free memory was 88.1MB in the beginning and 77.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,531 INFO L158 Benchmark]: TraceAbstraction took 346.09ms. Allocated memory is still 119.5MB. Free memory was 76.4MB in the beginning and 62.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:10:35,532 INFO L158 Benchmark]: Witness Printer took 6.06ms. Allocated memory is still 119.5MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:10:35,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.65ms. Allocated memory is still 119.5MB. Free memory was 76.2MB in the beginning and 91.1MB in the end (delta: -14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.35ms. Allocated memory is still 119.5MB. Free memory was 91.1MB in the beginning and 89.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.27ms. Allocated memory is still 119.5MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.84ms. Allocated memory is still 119.5MB. Free memory was 88.1MB in the beginning and 77.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 346.09ms. Allocated memory is still 119.5MB. Free memory was 76.4MB in the beginning and 62.9MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 6.06ms. Allocated memory is still 119.5MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=50) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=50) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, 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=13occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:10:35,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:38,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:38,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:10:38,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:38,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:38,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:38,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:38,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:38,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:38,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:38,415 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:38,415 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:38,416 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:38,417 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:38,418 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:38,418 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:38,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:38,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:38,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:10:38,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:10:38,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:38,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:38,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:38,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:38,424 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:10:38,424 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:10:38,424 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:10:38,425 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:10:38,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:38,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:38,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:38,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:10:38,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:38,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:38,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:38,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:38,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:38,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:38,430 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:10:38,431 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:10:38,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:38,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:38,432 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:38,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:38,433 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 [2023-11-23 21:10:38,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:38,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:38,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:38,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:38,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:38,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2023-11-23 21:10:42,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:42,562 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:42,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2023-11-23 21:10:42,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/54bcd5d9c/47dae966ab3f4654a5e081b91fb92dee/FLAG889187a2d [2023-11-23 21:10:42,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/data/54bcd5d9c/47dae966ab3f4654a5e081b91fb92dee [2023-11-23 21:10:42,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:42,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:42,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:42,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:42,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:42,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:42,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735656bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42, skipping insertion in model container [2023-11-23 21:10:42,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:42,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:42,840 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2023-11-23 21:10:42,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:42,880 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:42,897 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_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2023-11-23 21:10:42,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:42,935 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:42,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42 WrapperNode [2023-11-23 21:10:42,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:42,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:42,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:42,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:42,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:42,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:42,992 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-11-23 21:10:42,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:42,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:42,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:42,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:43,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:43,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:43,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:43,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:43,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (1/1) ... [2023-11-23 21:10:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:43,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:43,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:10:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:10:43,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:10:43,219 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:43,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:43,793 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:43,836 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:43,845 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:10:43,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:43 BoogieIcfgContainer [2023-11-23 21:10:43,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:43,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:43,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:43,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:43,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:42" (1/3) ... [2023-11-23 21:10:43,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2634522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:43, skipping insertion in model container [2023-11-23 21:10:43,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:42" (2/3) ... [2023-11-23 21:10:43,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2634522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:43, skipping insertion in model container [2023-11-23 21:10:43,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:43" (3/3) ... [2023-11-23 21:10:43,857 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2023-11-23 21:10:43,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:43,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:10:43,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:43,933 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;@6ecfd847, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:43,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:10:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:10:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:10:43,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:43,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:43,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1892700911, now seen corresponding path program 1 times [2023-11-23 21:10:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:10:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127553747] [2023-11-23 21:10:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:10:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:10:43,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:10:43,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:10:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:44,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:10:44,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:10:44,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:44,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:10:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127553747] [2023-11-23 21:10:44,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127553747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:44,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:44,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:10:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999953210] [2023-11-23 21:10:44,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:10:44,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:10:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:10:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:10:44,457 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:44,506 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-11-23 21:10:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:10:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:10:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:44,517 INFO L225 Difference]: With dead ends: 28 [2023-11-23 21:10:44,517 INFO L226 Difference]: Without dead ends: 13 [2023-11-23 21:10:44,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:10:44,524 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:44,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:10:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-23 21:10:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-23 21:10:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:10:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-11-23 21:10:44,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-11-23 21:10:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:44,566 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-11-23 21:10:44,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:10:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-23 21:10:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:10:44,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:44,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:44,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:44,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:10:44,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:44,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -115906089, now seen corresponding path program 1 times [2023-11-23 21:10:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:10:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285626841] [2023-11-23 21:10:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:44,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:10:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:10:44,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:10:44,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:10:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:45,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:10:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:10:45,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-23 21:10:45,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [563865181] [2023-11-23 21:10:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:10:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:10:45,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:10:45,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0867c4b0-ff45-44ab-a2bc-5a5a37a6e34b/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 21:10:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:46,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:10:46,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:28,620 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv50 32)))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse3))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse2)))) (_ bv0 32)) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse3))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) is different from false