./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/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 c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:22:41,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:22:41,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:22:41,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:22:41,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:22:41,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:22:41,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:22:41,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:22:41,288 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:22:41,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:22:41,291 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:22:41,292 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:22:41,292 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:22:41,292 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:22:41,293 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:22:41,293 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:22:41,293 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:22:41,298 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:22:41,298 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:22:41,299 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:22:41,299 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:22:41,300 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:22:41,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:22:41,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:22:41,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:22:41,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:22:41,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:22:41,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:22:41,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:22:41,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:22:41,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:22:41,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:22:41,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:22:41,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:22:41,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:22:41,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:22:41,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:22:41,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:22:41,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:22:41,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:22:41,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:22:41,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:22:41,311 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:22:41,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:22:41,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:22:41,312 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:22:41,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:22:41,313 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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2024-11-02 11:22:41,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:22:41,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:22:41,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:22:41,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:22:41,638 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:22:41,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/float-benchs/zonotope_3.c Unable to find full path for "g++" [2024-11-02 11:22:43,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:22:43,899 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:22:43,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/sv-benchmarks/c/float-benchs/zonotope_3.c [2024-11-02 11:22:43,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/data/ad21e8c38/3f64872829bc444682419096859d6eaf/FLAG924e70904 [2024-11-02 11:22:43,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/data/ad21e8c38/3f64872829bc444682419096859d6eaf [2024-11-02 11:22:43,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:22:43,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:22:43,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:22:43,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:22:43,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:22:43,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:22:43" (1/1) ... [2024-11-02 11:22:43,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695af18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:43, skipping insertion in model container [2024-11-02 11:22:43,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:22:43" (1/1) ... [2024-11-02 11:22:43,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:22:44,171 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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2024-11-02 11:22:44,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:22:44,199 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:22:44,212 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_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2024-11-02 11:22:44,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:22:44,236 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:22:44,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44 WrapperNode [2024-11-02 11:22:44,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:22:44,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:22:44,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:22:44,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:22:44,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,277 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-02 11:22:44,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:22:44,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:22:44,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:22:44,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:22:44,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:22:44,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:22:44,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:22:44,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:22:44,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (1/1) ... [2024-11-02 11:22:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:22:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:22:44,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:22:44,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:22:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:22:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-02 11:22:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-02 11:22:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-02 11:22:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-02 11:22:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:22:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:22:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:22:44,428 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:22:44,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:22:44,637 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-02 11:22:44,637 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:22:44,699 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:22:44,699 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 11:22:44,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:22:44 BoogieIcfgContainer [2024-11-02 11:22:44,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:22:44,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:22:44,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:22:44,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:22:44,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:22:43" (1/3) ... [2024-11-02 11:22:44,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a8cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:22:44, skipping insertion in model container [2024-11-02 11:22:44,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:22:44" (2/3) ... [2024-11-02 11:22:44,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a8cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:22:44, skipping insertion in model container [2024-11-02 11:22:44,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:22:44" (3/3) ... [2024-11-02 11:22:44,713 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-02 11:22:44,732 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:22:44,733 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:22:44,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:22:44,816 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;@2cef002c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:22:44,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:22:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 11:22:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 11:22:44,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:44,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:44,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:44,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash -786684961, now seen corresponding path program 1 times [2024-11-02 11:22:44,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:44,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404851625] [2024-11-02 11:22:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 11:22:45,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404851625] [2024-11-02 11:22:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404851625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:22:45,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:22:45,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:22:45,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100161658] [2024-11-02 11:22:45,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:22:45,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:22:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:22:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:22:45,123 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:22:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:45,174 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2024-11-02 11:22:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:22:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2024-11-02 11:22:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:45,185 INFO L225 Difference]: With dead ends: 41 [2024-11-02 11:22:45,185 INFO L226 Difference]: Without dead ends: 34 [2024-11-02 11:22:45,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:22:45,194 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:45,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:22:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-02 11:22:45,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2024-11-02 11:22:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 11:22:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-02 11:22:45,254 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 20 [2024-11-02 11:22:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:45,255 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-02 11:22:45,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 11:22:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-02 11:22:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-02 11:22:45,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:45,260 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:45,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:22:45,261 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:45,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 977538669, now seen corresponding path program 1 times [2024-11-02 11:22:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123635574] [2024-11-02 11:22:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:22:45,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123635574] [2024-11-02 11:22:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123635574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:22:45,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039246803] [2024-11-02 11:22:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:45,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:22:45,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:22:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:22:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:45,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:22:45,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:22:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:22:45,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:22:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 11:22:45,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039246803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:22:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2099441582] [2024-11-02 11:22:45,867 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 11:22:45,867 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:22:45,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:22:45,883 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:22:45,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:22:47,327 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 3 for LOIs [2024-11-02 11:22:47,329 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 3 for LOIs [2024-11-02 11:22:47,330 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:22:47,524 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '357#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-02 11:22:47,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:22:47,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:22:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-02 11:22:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242265501] [2024-11-02 11:22:47,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:22:47,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 11:22:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 11:22:47,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-02 11:22:47,533 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-02 11:22:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:47,641 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2024-11-02 11:22:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 11:22:47,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 37 [2024-11-02 11:22:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:47,644 INFO L225 Difference]: With dead ends: 56 [2024-11-02 11:22:47,645 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 11:22:47,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-02 11:22:47,648 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:47,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:22:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 11:22:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 11:22:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 11:22:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2024-11-02 11:22:47,670 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 37 [2024-11-02 11:22:47,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:47,672 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2024-11-02 11:22:47,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-02 11:22:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2024-11-02 11:22:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 11:22:47,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:47,675 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:47,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:22:47,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:47,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:47,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash 926551903, now seen corresponding path program 2 times [2024-11-02 11:22:47,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:47,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347304871] [2024-11-02 11:22:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:47,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 11:22:48,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347304871] [2024-11-02 11:22:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347304871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:22:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397003482] [2024-11-02 11:22:48,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 11:22:48,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:22:48,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:22:48,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:22:48,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-02 11:22:48,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 11:22:48,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 11:22:48,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:22:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 11:22:48,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:22:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-02 11:22:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397003482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:22:48,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1562760859] [2024-11-02 11:22:48,609 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 11:22:48,613 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:22:48,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:22:48,614 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:22:48,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:22:49,219 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 3 for LOIs [2024-11-02 11:22:49,221 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 3 for LOIs [2024-11-02 11:22:49,222 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:22:49,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1064#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-02 11:22:49,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:22:49,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:22:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-02 11:22:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310267324] [2024-11-02 11:22:49,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:22:49,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 11:22:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 11:22:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-02 11:22:49,399 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-02 11:22:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:49,567 INFO L93 Difference]: Finished difference Result 110 states and 157 transitions. [2024-11-02 11:22:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 11:22:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 88 [2024-11-02 11:22:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:49,570 INFO L225 Difference]: With dead ends: 110 [2024-11-02 11:22:49,570 INFO L226 Difference]: Without dead ends: 107 [2024-11-02 11:22:49,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-02 11:22:49,572 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:49,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 86 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:22:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-02 11:22:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-02 11:22:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-02 11:22:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 149 transitions. [2024-11-02 11:22:49,590 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 149 transitions. Word has length 88 [2024-11-02 11:22:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:49,592 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 149 transitions. [2024-11-02 11:22:49,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-02 11:22:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 149 transitions. [2024-11-02 11:22:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-02 11:22:49,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:49,601 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:49,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:22:49,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:49,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:49,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash 76621983, now seen corresponding path program 3 times [2024-11-02 11:22:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:49,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621536253] [2024-11-02 11:22:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-02 11:22:50,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621536253] [2024-11-02 11:22:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621536253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:22:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915021976] [2024-11-02 11:22:50,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 11:22:50,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:22:50,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:22:50,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 11:22:50,530 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 11:22:50,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 11:22:50,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 11:22:50,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:22:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-02 11:22:50,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:22:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-02 11:22:51,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915021976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:22:51,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2023447539] [2024-11-02 11:22:51,416 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 11:22:51,423 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:22:51,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:22:51,427 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:22:51,428 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:22:52,025 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 3 for LOIs [2024-11-02 11:22:52,040 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 3 for LOIs [2024-11-02 11:22:52,041 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:22:52,238 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2563#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-02 11:22:52,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:22:52,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:22:52,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-02 11:22:52,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055826172] [2024-11-02 11:22:52,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:22:52,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-02 11:22:52,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-02 11:22:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2024-11-02 11:22:52,245 INFO L87 Difference]: Start difference. First operand 107 states and 149 transitions. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-02 11:22:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:52,617 INFO L93 Difference]: Finished difference Result 218 states and 319 transitions. [2024-11-02 11:22:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 11:22:52,618 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 190 [2024-11-02 11:22:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:52,622 INFO L225 Difference]: With dead ends: 218 [2024-11-02 11:22:52,622 INFO L226 Difference]: Without dead ends: 215 [2024-11-02 11:22:52,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2024-11-02 11:22:52,624 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:52,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 11:22:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-02 11:22:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-02 11:22:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-02 11:22:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 305 transitions. [2024-11-02 11:22:52,691 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 305 transitions. Word has length 190 [2024-11-02 11:22:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:52,692 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 305 transitions. [2024-11-02 11:22:52,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-02 11:22:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 305 transitions. [2024-11-02 11:22:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-02 11:22:52,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:52,715 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:52,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 11:22:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:52,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:52,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash -954299617, now seen corresponding path program 4 times [2024-11-02 11:22:52,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600679908] [2024-11-02 11:22:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:52,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 2101 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-02 11:22:54,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:22:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600679908] [2024-11-02 11:22:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600679908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:22:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995005003] [2024-11-02 11:22:54,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 11:22:54,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:54,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:22:54,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:22:54,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 11:22:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:22:54,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-02 11:22:54,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:22:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 2101 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-02 11:22:55,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:22:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 2101 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-02 11:22:56,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995005003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:22:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [865633090] [2024-11-02 11:22:56,701 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 11:22:56,701 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:22:56,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:22:56,702 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:22:56,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:22:57,160 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 3 for LOIs [2024-11-02 11:22:57,161 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 3 for LOIs [2024-11-02 11:22:57,162 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:22:57,378 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5646#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-02 11:22:57,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:22:57,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:22:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-02 11:22:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299076876] [2024-11-02 11:22:57,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:22:57,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-02 11:22:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:22:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-02 11:22:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2024-11-02 11:22:57,385 INFO L87 Difference]: Start difference. First operand 215 states and 305 transitions. Second operand has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 46 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 46 states have call predecessors, (184), 46 states have call successors, (184) [2024-11-02 11:22:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:22:58,161 INFO L93 Difference]: Finished difference Result 434 states and 643 transitions. [2024-11-02 11:22:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-02 11:22:58,162 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 46 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 46 states have call predecessors, (184), 46 states have call successors, (184) Word has length 394 [2024-11-02 11:22:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:22:58,171 INFO L225 Difference]: With dead ends: 434 [2024-11-02 11:22:58,172 INFO L226 Difference]: Without dead ends: 431 [2024-11-02 11:22:58,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1153 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2024-11-02 11:22:58,177 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 11:22:58,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 194 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 11:22:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-02 11:22:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2024-11-02 11:22:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 240 states have (on average 1.0041666666666667) internal successors, (241), 240 states have internal predecessors, (241), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-02 11:22:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 617 transitions. [2024-11-02 11:22:58,244 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 617 transitions. Word has length 394 [2024-11-02 11:22:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:22:58,246 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 617 transitions. [2024-11-02 11:22:58,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.857142857142857) internal successors, (238), 49 states have internal predecessors, (238), 46 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 46 states have call predecessors, (184), 46 states have call successors, (184) [2024-11-02 11:22:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 617 transitions. [2024-11-02 11:22:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2024-11-02 11:22:58,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:22:58,280 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:22:58,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-02 11:22:58,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:22:58,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:22:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:22:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -328855521, now seen corresponding path program 5 times [2024-11-02 11:22:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:22:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301242843] [2024-11-02 11:22:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:22:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:22:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 26845 backedges. 0 proven. 9361 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-11-02 11:23:03,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301242843] [2024-11-02 11:23:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301242843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:23:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232031406] [2024-11-02 11:23:03,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 11:23:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:03,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:03,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 11:23:03,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2024-11-02 11:23:03,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 11:23:03,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-02 11:23:03,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26845 backedges. 0 proven. 9361 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-11-02 11:23:04,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:23:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 26845 backedges. 0 proven. 9361 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-11-02 11:23:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232031406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:23:08,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573484199] [2024-11-02 11:23:08,821 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 11:23:08,821 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:23:08,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:23:08,825 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:23:08,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:23:09,259 INFO L197 IcfgInterpreter]: Interpreting procedure g with input of size 3 for LOIs [2024-11-02 11:23:09,261 INFO L197 IcfgInterpreter]: Interpreting procedure f with input of size 3 for LOIs [2024-11-02 11:23:09,262 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:23:09,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11897#(<= 1 |#StackHeapBarrier|)' at error location [2024-11-02 11:23:09,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:23:09,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:23:09,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-02 11:23:09,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096921466] [2024-11-02 11:23:09,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:23:09,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-02 11:23:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-02 11:23:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2024-11-02 11:23:09,535 INFO L87 Difference]: Start difference. First operand 431 states and 617 transitions. Second operand has 97 states, 97 states have (on average 4.927835051546392) internal successors, (478), 97 states have internal predecessors, (478), 94 states have call successors, (376), 1 states have call predecessors, (376), 1 states have return successors, (376), 94 states have call predecessors, (376), 94 states have call successors, (376) [2024-11-02 11:23:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:11,100 INFO L93 Difference]: Finished difference Result 866 states and 1291 transitions. [2024-11-02 11:23:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-02 11:23:11,102 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 4.927835051546392) internal successors, (478), 97 states have internal predecessors, (478), 94 states have call successors, (376), 1 states have call predecessors, (376), 1 states have return successors, (376), 94 states have call predecessors, (376), 94 states have call successors, (376) Word has length 802 [2024-11-02 11:23:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:11,109 INFO L225 Difference]: With dead ends: 866 [2024-11-02 11:23:11,109 INFO L226 Difference]: Without dead ends: 863 [2024-11-02 11:23:11,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2453 GetRequests, 2353 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2024-11-02 11:23:11,113 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:11,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 392 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 11:23:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-02 11:23:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2024-11-02 11:23:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 480 states have (on average 1.0020833333333334) internal successors, (481), 480 states have internal predecessors, (481), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-02 11:23:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1241 transitions. [2024-11-02 11:23:11,172 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1241 transitions. Word has length 802 [2024-11-02 11:23:11,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:11,175 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1241 transitions. [2024-11-02 11:23:11,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 4.927835051546392) internal successors, (478), 97 states have internal predecessors, (478), 94 states have call successors, (376), 1 states have call predecessors, (376), 1 states have return successors, (376), 94 states have call predecessors, (376), 94 states have call successors, (376) [2024-11-02 11:23:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1241 transitions. [2024-11-02 11:23:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2024-11-02 11:23:11,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:11,246 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:11,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a617e0d6-d7f0-4798-8b25-990b35ddfa2b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0