./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2 --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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:35,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:35,611 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:26:35,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:35,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:35,651 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:35,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:35,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:35,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:35,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:35,654 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:35,654 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:35,655 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:35,656 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:35,656 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:35,657 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:35,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:35,658 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:35,658 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:35,658 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:35,661 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:35,666 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:35,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:35,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:35,667 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:26:35,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:35,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:26:35,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:35,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:35,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:35,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:35,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:35,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:26:35,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:35,672 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:35,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:35,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:35,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:35,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:35,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:35,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:35,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:35,676 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:35,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:35,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:35,677 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:35,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:35,677 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_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2024-11-02 12:26:35,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:35,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:35,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:36,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:36,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:36,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c Unable to find full path for "g++" [2024-11-02 12:26:38,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:38,297 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:38,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2024-11-02 12:26:38,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/data/3856100f7/03d3e7b1595b415f846c9374113bef09/FLAG22ba36646 [2024-11-02 12:26:38,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/data/3856100f7/03d3e7b1595b415f846c9374113bef09 [2024-11-02 12:26:38,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:38,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:38,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:38,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:38,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:38,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:38" (1/1) ... [2024-11-02 12:26:38,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248b5e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:38, skipping insertion in model container [2024-11-02 12:26:38,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:38" (1/1) ... [2024-11-02 12:26:38,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:39,017 WARN L251 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_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-02 12:26:39,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:39,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:39,118 WARN L251 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_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-02 12:26:39,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:39,193 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:39,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39 WrapperNode [2024-11-02 12:26:39,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:39,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:39,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:39,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:39,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,253 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-02 12:26:39,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:39,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:39,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:39,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:39,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:39,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:39,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:39,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:39,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (1/1) ... [2024-11-02 12:26:39,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:39,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:39,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-02 12:26:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-02 12:26:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:26:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:26:39,455 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:39,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:39,898 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:39,899 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:40,145 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:40,145 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:26:40,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:40 BoogieIcfgContainer [2024-11-02 12:26:40,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:40,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:40,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:40,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:40,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:38" (1/3) ... [2024-11-02 12:26:40,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b52322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:40, skipping insertion in model container [2024-11-02 12:26:40,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:39" (2/3) ... [2024-11-02 12:26:40,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b52322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:40, skipping insertion in model container [2024-11-02 12:26:40,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:40" (3/3) ... [2024-11-02 12:26:40,155 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2024-11-02 12:26:40,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:40,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:40,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:40,252 INFO L333 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, 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;@293ea287, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:40,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 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) [2024-11-02 12:26:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:26:40,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:40,268 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:40,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:40,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash 941542834, now seen corresponding path program 1 times [2024-11-02 12:26:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:40,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836335108] [2024-11-02 12:26:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:26:40,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:40,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836335108] [2024-11-02 12:26:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836335108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:40,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878331321] [2024-11-02 12:26:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:40,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:40,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:26:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:40,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:26:40,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:26:41,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:26:41,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878331321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:41,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:26:41,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:26:41,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379635661] [2024-11-02 12:26:41,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:41,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:41,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:41,053 INFO L87 Difference]: Start difference. First operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 32 states have internal predecessors, (47), 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 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:41,223 INFO L93 Difference]: Finished difference Result 88 states and 138 transitions. [2024-11-02 12:26:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:26:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-02 12:26:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:41,235 INFO L225 Difference]: With dead ends: 88 [2024-11-02 12:26:41,235 INFO L226 Difference]: Without dead ends: 47 [2024-11-02 12:26:41,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:26:41,242 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:41,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 86 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-02 12:26:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-02 12:26:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:26:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2024-11-02 12:26:41,293 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 32 [2024-11-02 12:26:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:41,296 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2024-11-02 12:26:41,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2024-11-02 12:26:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:26:41,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:41,300 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:41,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:26:41,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:41,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -790392936, now seen corresponding path program 1 times [2024-11-02 12:26:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159313436] [2024-11-02 12:26:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:26:41,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159313436] [2024-11-02 12:26:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159313436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:41,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784628785] [2024-11-02 12:26:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:41,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:41,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:41,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:41,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:26:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:41,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:26:41,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:26:41,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:26:41,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784628785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:41,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:26:41,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-02 12:26:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706668934] [2024-11-02 12:26:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:41,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:26:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:26:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:41,872 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:41,977 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2024-11-02 12:26:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:26:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-02 12:26:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:41,979 INFO L225 Difference]: With dead ends: 77 [2024-11-02 12:26:41,979 INFO L226 Difference]: Without dead ends: 44 [2024-11-02 12:26:41,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:41,981 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:41,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 86 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-02 12:26:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-02 12:26:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 35 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 12:26:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2024-11-02 12:26:41,990 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 35 [2024-11-02 12:26:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:41,991 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2024-11-02 12:26:41,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2024-11-02 12:26:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-02 12:26:41,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:41,993 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:42,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:26:42,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:42,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:42,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1525703309, now seen corresponding path program 1 times [2024-11-02 12:26:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:42,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958234425] [2024-11-02 12:26:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:42,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:26:42,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958234425] [2024-11-02 12:26:42,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958234425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976423280] [2024-11-02 12:26:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:42,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:42,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:42,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:42,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:26:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:42,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:26:42,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:26:42,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:26:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976423280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:42,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:26:42,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-02 12:26:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938377762] [2024-11-02 12:26:42,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:42,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:26:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:26:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:42,652 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:42,835 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2024-11-02 12:26:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:26:42,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-02 12:26:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:42,837 INFO L225 Difference]: With dead ends: 88 [2024-11-02 12:26:42,839 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:26:42,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:26:42,842 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:42,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 114 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:26:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-11-02 12:26:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 12:26:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-11-02 12:26:42,861 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 36 [2024-11-02 12:26:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:42,862 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-11-02 12:26:42,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-11-02 12:26:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-02 12:26:42,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:42,865 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:42,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:26:43,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:43,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:43,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2004129185, now seen corresponding path program 1 times [2024-11-02 12:26:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723335188] [2024-11-02 12:26:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:43,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:26:43,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723335188] [2024-11-02 12:26:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723335188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874855319] [2024-11-02 12:26:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:43,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:43,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:26:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:43,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:26:43,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:26:43,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:26:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-02 12:26:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874855319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:26:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978385791] [2024-11-02 12:26:44,094 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-02 12:26:44,094 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:26:44,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:26:44,105 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:26:44,107 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:26:44,529 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 43 for LOIs [2024-11-02 12:26:44,819 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:26:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1978385791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:46,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:26:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 11, 11] total 27 [2024-11-02 12:26:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276145477] [2024-11-02 12:26:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:46,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:26:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:26:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-11-02 12:26:46,078 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:46,447 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-11-02 12:26:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:26:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2024-11-02 12:26:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:46,450 INFO L225 Difference]: With dead ends: 104 [2024-11-02 12:26:46,450 INFO L226 Difference]: Without dead ends: 63 [2024-11-02 12:26:46,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-11-02 12:26:46,453 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:46,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 182 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:26:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-02 12:26:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2024-11-02 12:26:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:26:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-02 12:26:46,470 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 37 [2024-11-02 12:26:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:46,470 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-02 12:26:46,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-02 12:26:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-02 12:26:46,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:46,472 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:46,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:26:46,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:46,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:46,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:46,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1312483893, now seen corresponding path program 1 times [2024-11-02 12:26:46,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:46,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883481196] [2024-11-02 12:26:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-02 12:26:47,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883481196] [2024-11-02 12:26:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883481196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:47,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645746198] [2024-11-02 12:26:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:47,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:47,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:47,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:26:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:47,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-02 12:26:47,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:26:47,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:26:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:26:49,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645746198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:26:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1475910162] [2024-11-02 12:26:49,328 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-02 12:26:49,328 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:26:49,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:26:49,329 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:26:49,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:26:51,970 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:26:52,151 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 46 for LOIs [2024-11-02 12:26:52,336 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:27:04,899 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1591#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~one~0#1_29| Int) (|v_ULTIMATE.start_main_~a~0#1_33| Int) (|v_ULTIMATE.start_main_~mb~2#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_mulflt_~b#1_37| Int) (|v_ULTIMATE.start_main_~b~0#1_32| Int) (|v_ULTIMATE.start_mulflt_~a#1_28| Int)) (and (= |v_ULTIMATE.start_main_~b~0#1_32| |v_ULTIMATE.start_mulflt_~b#1_37|) (or (and (= (mod |v_ULTIMATE.start_main_~mb~2#1_BEFORE_CALL_3| 4294967296) 0) (= |v_ULTIMATE.start_main_~b~0#1_32| 0)) (exists ((v_base2flt_~e_71 Int) (v_base2flt_~m_106 Int) (v_base2flt_~m_50 Int)) (and (<= 8388608 (mod v_base2flt_~m_106 2147483648)) (<= 0 (+ v_base2flt_~e_71 128)) (= |v_ULTIMATE.start_main_~b~0#1_32| (* 16777216 (mod (+ v_base2flt_~e_71 128) 4294967296))) (= (mod v_base2flt_~m_50 4294967296) 0)))) (<= 1 (mod |v_ULTIMATE.start_main_~a~0#1_33| 4294967296)) (= (mod |v_ULTIMATE.start_main_~b~0#1_32| 4294967296) (mod |v_ULTIMATE.start_main_~one~0#1_29| 4294967296)) (= (mod |v_ULTIMATE.start_mulflt_~b#1_37| 4294967296) 0) (= |v_ULTIMATE.start_main_~a~0#1_33| |v_ULTIMATE.start_mulflt_~a#1_28|))))' at error location [2024-11-02 12:27:04,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:27:04,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:27:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 39 [2024-11-02 12:27:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110120096] [2024-11-02 12:27:04,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:27:04,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-02 12:27:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-02 12:27:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3118, Unknown=1, NotChecked=0, Total=3306 [2024-11-02 12:27:04,911 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 39 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-02 12:27:08,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:08,184 INFO L93 Difference]: Finished difference Result 247 states and 395 transitions. [2024-11-02 12:27:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-02 12:27:08,185 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 40 [2024-11-02 12:27:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:08,190 INFO L225 Difference]: With dead ends: 247 [2024-11-02 12:27:08,190 INFO L226 Difference]: Without dead ends: 188 [2024-11-02 12:27:08,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=443, Invalid=6866, Unknown=1, NotChecked=0, Total=7310 [2024-11-02 12:27:08,195 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 178 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:08,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1402 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-02 12:27:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-02 12:27:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 82. [2024-11-02 12:27:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.328358208955224) internal successors, (89), 67 states have internal predecessors, (89), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-02 12:27:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2024-11-02 12:27:08,237 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 40 [2024-11-02 12:27:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:08,241 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2024-11-02 12:27:08,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-02 12:27:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2024-11-02 12:27:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:27:08,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:08,243 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:08,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:27:08,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:08,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:08,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1559247123, now seen corresponding path program 1 times [2024-11-02 12:27:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4449881] [2024-11-02 12:27:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:27:08,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4449881] [2024-11-02 12:27:08,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4449881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:27:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641100149] [2024-11-02 12:27:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:08,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:08,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:08,671 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:08,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8b3f4c-2cd8-405e-9e0d-e6f4e8972b6c/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:27:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:08,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:27:08,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:27:08,856 INFO L311 TraceCheckSpWp]: Computing backward predicates...