./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c065a55f68f899d0f20fc5e1ef687a000c7e9a3454841ed8a67112aa421d143f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:59:55,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:59:55,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:59:55,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:59:55,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:59:55,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:59:55,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:59:55,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:59:55,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:59:55,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:59:55,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:59:55,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:59:55,886 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:59:55,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:59:55,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:59:55,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:59:55,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:59:55,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:59:55,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:59:55,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:59:55,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:59:55,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:59:55,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:59:55,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:59:55,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:59:55,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:59:55,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:59:55,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:59:55,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:55,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:59:55,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:59:55,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:59:55,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:59:55,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:59:55,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:59:55,903 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:59:55,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:59:55,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:59:55,905 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:59:55,905 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c065a55f68f899d0f20fc5e1ef687a000c7e9a3454841ed8a67112aa421d143f [2023-11-06 21:59:56,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:56,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:56,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:56,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:56,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:56,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c [2023-11-06 21:59:59,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:00:00,096 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:00:00,097 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c [2023-11-06 22:00:00,111 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/7aa4bbbec/17a801731e1b45ed9beef0a02305a546/FLAGa1c9a4088 [2023-11-06 22:00:00,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/7aa4bbbec/17a801731e1b45ed9beef0a02305a546 [2023-11-06 22:00:00,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:00:00,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:00:00,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:00,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:00:00,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:00:00,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1062145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00, skipping insertion in model container [2023-11-06 22:00:00,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:00,399 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[1997,2010] [2023-11-06 22:00:00,405 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[2366,2379] [2023-11-06 22:00:00,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:00,474 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:00:00,494 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[1997,2010] [2023-11-06 22:00:00,496 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[2366,2379] [2023-11-06 22:00:00,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:00,557 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:00:00,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00 WrapperNode [2023-11-06 22:00:00,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:00,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:00,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:00:00,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:00:00,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,641 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-06 22:00:00,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:00,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:00:00,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:00:00,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:00:00,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:00:00,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:00:00,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:00:00,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:00:00,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (1/1) ... [2023-11-06 22:00:00,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:00,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:00,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:00:00,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:00:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:00:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-06 22:00:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-06 22:00:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:00:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:00:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:00:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:00:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:00:00,974 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:00:00,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:00:01,472 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:00:01,482 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:00:01,482 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:00:01,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:01 BoogieIcfgContainer [2023-11-06 22:00:01,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:00:01,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:00:01,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:00:01,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:00:01,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:00" (1/3) ... [2023-11-06 22:00:01,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef64bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:01, skipping insertion in model container [2023-11-06 22:00:01,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00" (2/3) ... [2023-11-06 22:00:01,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fef64bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:01, skipping insertion in model container [2023-11-06 22:00:01,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:01" (3/3) ... [2023-11-06 22:00:01,498 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_5a.c.cil.c [2023-11-06 22:00:01,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:00:01,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:00:01,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:00:01,601 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@534decf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:00:01,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:00:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 68 states have (on average 1.588235294117647) internal successors, (108), 71 states have internal predecessors, (108), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:00:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:00:01,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:01,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:01,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:01,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2023-11-06 22:00:01,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46942678] [2023-11-06 22:00:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:00:01,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:00:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:00:01,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:00:01,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:00:01,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-06 22:00:01,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-06 22:00:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:00:01,822 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 22:00:01,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:00:01,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:00:01 BoogieIcfgContainer [2023-11-06 22:00:01,850 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:00:01,851 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:00:01,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:00:01,852 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:00:01,853 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:01" (3/4) ... [2023-11-06 22:00:01,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:00:01,857 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:00:01,858 INFO L158 Benchmark]: Toolchain (without parser) took 1713.90ms. Allocated memory is still 186.6MB. Free memory was 124.8MB in the beginning and 121.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,859 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:00:01,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.01ms. Allocated memory is still 186.6MB. Free memory was 124.7MB in the beginning and 110.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.30ms. Allocated memory is still 186.6MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,861 INFO L158 Benchmark]: Boogie Preprocessor took 70.58ms. Allocated memory is still 186.6MB. Free memory was 108.4MB in the beginning and 156.5MB in the end (delta: -48.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,862 INFO L158 Benchmark]: RCFGBuilder took 771.62ms. Allocated memory is still 186.6MB. Free memory was 156.5MB in the beginning and 136.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,863 INFO L158 Benchmark]: TraceAbstraction took 361.87ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 121.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:00:01,864 INFO L158 Benchmark]: Witness Printer took 6.08ms. Allocated memory is still 186.6MB. Free memory is still 121.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:00:01,868 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.01ms. Allocated memory is still 186.6MB. Free memory was 124.7MB in the beginning and 110.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.30ms. Allocated memory is still 186.6MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.58ms. Allocated memory is still 186.6MB. Free memory was 108.4MB in the beginning and 156.5MB in the end (delta: -48.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * RCFGBuilder took 771.62ms. Allocated memory is still 186.6MB. Free memory was 156.5MB in the beginning and 136.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 361.87ms. Allocated memory is still 186.6MB. Free memory was 135.9MB in the beginning and 121.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.08ms. Allocated memory is still 186.6MB. Free memory is still 121.8MB. 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: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 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=78occurred 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, 7 NumberOfCodeBlocks, 7 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 [2023-11-06 22:00:01,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c065a55f68f899d0f20fc5e1ef687a000c7e9a3454841ed8a67112aa421d143f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:00:05,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:00:05,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-06 22:00:05,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:00:05,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:00:05,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:00:05,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:00:05,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:00:05,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:00:05,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:00:05,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:00:05,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:00:05,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:00:05,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:00:05,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:00:05,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:00:05,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:00:05,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:00:05,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:00:05,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:00:05,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:00:05,398 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:00:05,399 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:00:05,399 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:00:05,400 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:00:05,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:00:05,401 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:00:05,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:00:05,402 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:00:05,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:00:05,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:05,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:00:05,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:00:05,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:00:05,406 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:00:05,406 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:00:05,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:00:05,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:00:05,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:00:05,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:00:05,409 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:00:05,409 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:00:05,410 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c065a55f68f899d0f20fc5e1ef687a000c7e9a3454841ed8a67112aa421d143f [2023-11-06 22:00:05,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:00:05,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:00:05,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:00:05,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:00:05,982 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:00:05,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c [2023-11-06 22:00:09,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:00:09,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:00:09,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c [2023-11-06 22:00:09,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/59256a568/f076a74a6c454cb38ae176dc7b1c25c2/FLAG7ad5db8c7 [2023-11-06 22:00:09,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/data/59256a568/f076a74a6c454cb38ae176dc7b1c25c2 [2023-11-06 22:00:10,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:00:10,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:00:10,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:10,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:00:10,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:00:10,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:09" (1/1) ... [2023-11-06 22:00:10,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0719b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10, skipping insertion in model container [2023-11-06 22:00:10,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:09" (1/1) ... [2023-11-06 22:00:10,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:10,371 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[1997,2010] [2023-11-06 22:00:10,379 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[2366,2379] [2023-11-06 22:00:10,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:10,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:00:10,524 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[1997,2010] [2023-11-06 22:00:10,526 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_48825c66-d406-4261-a605-5dcfb2f7ea63/sv-benchmarks/c/combinations/square_2+soft_float_5a.c.cil.c[2366,2379] [2023-11-06 22:00:10,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:10,583 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:00:10,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10 WrapperNode [2023-11-06 22:00:10,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:10,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:10,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:00:10,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:00:10,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,668 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-06 22:00:10,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:10,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:00:10,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:00:10,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:00:10,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:00:10,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:00:10,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:00:10,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:00:10,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2023-11-06 22:00:10,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:10,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:10,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:00:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:00:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:00:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:00:10,849 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-06 22:00:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-06 22:00:10,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:00:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:00:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:00:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:00:11,013 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:00:11,027 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:00:13,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:00:13,909 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:00:13,909 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:00:13,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:13 BoogieIcfgContainer [2023-11-06 22:00:13,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:00:13,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:00:13,915 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:00:13,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:00:13,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:09" (1/3) ... [2023-11-06 22:00:13,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e87d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:13, skipping insertion in model container [2023-11-06 22:00:13,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (2/3) ... [2023-11-06 22:00:13,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e87d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:13, skipping insertion in model container [2023-11-06 22:00:13,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:13" (3/3) ... [2023-11-06 22:00:13,923 INFO L112 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_5a.c.cil.c [2023-11-06 22:00:13,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:00:13,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:00:14,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:00:14,036 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@72feb89b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:00:14,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:00:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:00:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:00:14,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:14,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:14,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:14,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2023-11-06 22:00:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487466637] [2023-11-06 22:00:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:14,087 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 [2023-11-06 22:00:14,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:14,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:00:14,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:00:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:14,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:00:14,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:00:14,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:00:14,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:00:14,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487466637] [2023-11-06 22:00:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487466637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:14,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:00:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611989874] [2023-11-06 22:00:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:14,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:00:14,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:00:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:00:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:00:14,901 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:00:14,955 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2023-11-06 22:00:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:00:14,959 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:00:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:00:14,972 INFO L225 Difference]: With dead ends: 117 [2023-11-06 22:00:14,973 INFO L226 Difference]: Without dead ends: 52 [2023-11-06 22:00:14,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:00:14,986 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:00:14,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:00:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-06 22:00:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-06 22:00:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 22:00:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2023-11-06 22:00:15,062 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2023-11-06 22:00:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:00:15,063 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2023-11-06 22:00:15,065 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2023-11-06 22:00:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:00:15,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:00:15,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:15,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:00:15,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:00:15,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:00:15,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2023-11-06 22:00:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:00:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072989114] [2023-11-06 22:00:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:15,284 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 [2023-11-06 22:00:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:00:15,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:00:15,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48825c66-d406-4261-a605-5dcfb2f7ea63/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:01:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:01:22,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.