./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/exponential-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-theta/exponential-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje --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 c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:19:27,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:19:27,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:19:27,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:19:27,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:19:27,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:19:27,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:19:27,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:19:27,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:19:27,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:19:27,773 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:19:27,774 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:19:27,774 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:19:27,775 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:19:27,775 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:19:27,775 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:19:27,776 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:19:27,776 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:19:27,779 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:19:27,780 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:19:27,780 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:19:27,781 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:19:27,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:19:27,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:19:27,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:19:27,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:19:27,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:19:27,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:19:27,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:19:27,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:19:27,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:19:27,794 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:19:27,794 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:19:27,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:19:27,795 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:19:27,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:19:27,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:19:27,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:19:27,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:19:27,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:19:27,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:19:27,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:19:27,798 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:19:27,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:19:27,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:19:27,798 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:19:27,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:19:27,799 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_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-09 06:19:28,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:19:28,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:19:28,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:19:28,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:19:28,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:19:28,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread-theta/exponential-64.i Unable to find full path for "g++" [2024-11-09 06:19:30,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:19:30,388 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:19:30,389 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-09 06:19:30,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/data/a3381e85a/8a6501f262514e399559e61a077d22f0/FLAG7483cda2d [2024-11-09 06:19:30,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/data/a3381e85a/8a6501f262514e399559e61a077d22f0 [2024-11-09 06:19:30,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:19:30,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:19:30,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:30,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:19:30,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:19:30,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:30" (1/1) ... [2024-11-09 06:19:30,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69eeab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:30, skipping insertion in model container [2024-11-09 06:19:30,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:30" (1/1) ... [2024-11-09 06:19:30,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:19:30,897 WARN L250 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_062a39ca-3683-4112-9254-870f10e6e732/sv-benchmarks/c/pthread-theta/exponential-64.i[33030,33043] [2024-11-09 06:19:30,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:30,938 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:19:31,000 WARN L250 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_062a39ca-3683-4112-9254-870f10e6e732/sv-benchmarks/c/pthread-theta/exponential-64.i[33030,33043] [2024-11-09 06:19:31,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:31,062 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:19:31,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31 WrapperNode [2024-11-09 06:19:31,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:31,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:31,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:19:31,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:19:31,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,121 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2024-11-09 06:19:31,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:31,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:19:31,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:19:31,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:19:31,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:19:31,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:19:31,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:19:31,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:19:31,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (1/1) ... [2024-11-09 06:19:31,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:19:31,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:31,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:19:31,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:19:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:19:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-09 06:19:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-09 06:19:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-09 06:19:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-09 06:19:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:19:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:19:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:19:31,248 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:19:31,387 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:19:31,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:19:31,609 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:19:31,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:19:31,727 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:19:31,728 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:19:31,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:31 BoogieIcfgContainer [2024-11-09 06:19:31,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:19:31,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:19:31,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:19:31,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:19:31,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:19:30" (1/3) ... [2024-11-09 06:19:31,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8def41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:31, skipping insertion in model container [2024-11-09 06:19:31,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:31" (2/3) ... [2024-11-09 06:19:31,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8def41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:31, skipping insertion in model container [2024-11-09 06:19:31,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:31" (3/3) ... [2024-11-09 06:19:31,740 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-09 06:19:31,757 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:19:31,757 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:19:31,758 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:19:31,804 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:19:31,865 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 28 transitions, 64 flow [2024-11-09 06:19:31,948 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 211 states, 208 states have (on average 2.5961538461538463) internal successors, (540), 210 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:31,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:19:31,990 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;@df8cd9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:19:31,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 06:19:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 208 states have (on average 2.5961538461538463) internal successors, (540), 210 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:19:31,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:32,000 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:32,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:32,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:32,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1049936214, now seen corresponding path program 1 times [2024-11-09 06:19:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81910492] [2024-11-09 06:19:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:32,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:32,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81910492] [2024-11-09 06:19:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81910492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:32,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:32,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:19:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511942693] [2024-11-09 06:19:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:32,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:19:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:19:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:32,359 INFO L87 Difference]: Start difference. First operand has 211 states, 208 states have (on average 2.5961538461538463) internal successors, (540), 210 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:32,448 INFO L93 Difference]: Finished difference Result 211 states and 540 transitions. [2024-11-09 06:19:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:19:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:19:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:32,464 INFO L225 Difference]: With dead ends: 211 [2024-11-09 06:19:32,465 INFO L226 Difference]: Without dead ends: 204 [2024-11-09 06:19:32,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:32,472 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:32,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-09 06:19:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-09 06:19:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 2.623762376237624) internal successors, (530), 203 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 530 transitions. [2024-11-09 06:19:32,555 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 530 transitions. Word has length 7 [2024-11-09 06:19:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:32,556 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 530 transitions. [2024-11-09 06:19:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 530 transitions. [2024-11-09 06:19:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 06:19:32,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:32,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:32,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:19:32,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:32,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 554448092, now seen corresponding path program 1 times [2024-11-09 06:19:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112173650] [2024-11-09 06:19:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:32,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:19:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:32,653 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:19:32,654 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:19:32,656 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 06:19:32,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 06:19:32,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-09 06:19:32,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:19:32,663 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 06:19:32,665 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:19:32,665 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 06:19:32,690 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:19:32,693 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 36 transitions, 92 flow [2024-11-09 06:19:32,984 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3395 states, 3391 states have (on average 4.0495429076968446) internal successors, (13732), 3394 states have internal predecessors, (13732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:32,989 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:19:32,993 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;@df8cd9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:19:32,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 06:19:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 3395 states, 3391 states have (on average 4.0495429076968446) internal successors, (13732), 3394 states have internal predecessors, (13732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:19:33,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:33,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:33,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:33,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash -294665222, now seen corresponding path program 1 times [2024-11-09 06:19:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128050260] [2024-11-09 06:19:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:33,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:33,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128050260] [2024-11-09 06:19:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128050260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:33,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:33,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:19:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496338020] [2024-11-09 06:19:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:33,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:19:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:19:33,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:33,127 INFO L87 Difference]: Start difference. First operand has 3395 states, 3391 states have (on average 4.0495429076968446) internal successors, (13732), 3394 states have internal predecessors, (13732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:33,332 INFO L93 Difference]: Finished difference Result 3395 states and 13732 transitions. [2024-11-09 06:19:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:19:33,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:19:33,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:33,384 INFO L225 Difference]: With dead ends: 3395 [2024-11-09 06:19:33,385 INFO L226 Difference]: Without dead ends: 3388 [2024-11-09 06:19:33,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:33,389 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:33,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2024-11-09 06:19:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3388. [2024-11-09 06:19:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3385 states have (on average 4.0537666174298375) internal successors, (13722), 3387 states have internal predecessors, (13722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 13722 transitions. [2024-11-09 06:19:33,642 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 13722 transitions. Word has length 7 [2024-11-09 06:19:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:33,642 INFO L471 AbstractCegarLoop]: Abstraction has 3388 states and 13722 transitions. [2024-11-09 06:19:33,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 13722 transitions. [2024-11-09 06:19:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:19:33,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:33,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:33,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:19:33,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:33,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -171190103, now seen corresponding path program 1 times [2024-11-09 06:19:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:33,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271854504] [2024-11-09 06:19:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:33,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:33,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:33,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271854504] [2024-11-09 06:19:33,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271854504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:33,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:33,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:19:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982940923] [2024-11-09 06:19:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:33,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:19:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:19:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:33,861 INFO L87 Difference]: Start difference. First operand 3388 states and 13722 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:34,121 INFO L93 Difference]: Finished difference Result 5020 states and 20378 transitions. [2024-11-09 06:19:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:19:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 06:19:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:34,226 INFO L225 Difference]: With dead ends: 5020 [2024-11-09 06:19:34,226 INFO L226 Difference]: Without dead ends: 3932 [2024-11-09 06:19:34,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:34,237 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:34,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2024-11-09 06:19:34,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3932. [2024-11-09 06:19:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 3929 states have (on average 4.034105370323237) internal successors, (15850), 3931 states have internal predecessors, (15850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 15850 transitions. [2024-11-09 06:19:34,598 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 15850 transitions. Word has length 13 [2024-11-09 06:19:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:34,599 INFO L471 AbstractCegarLoop]: Abstraction has 3932 states and 15850 transitions. [2024-11-09 06:19:34,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 15850 transitions. [2024-11-09 06:19:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:19:34,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:34,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:34,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:19:34,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:34,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1274135805, now seen corresponding path program 1 times [2024-11-09 06:19:34,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775409971] [2024-11-09 06:19:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:34,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:34,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775409971] [2024-11-09 06:19:34,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775409971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843640025] [2024-11-09 06:19:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:34,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:34,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:19:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:34,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:19:34,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:35,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843640025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [529888542] [2024-11-09 06:19:35,141 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 06:19:35,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:19:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 06:19:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002706986] [2024-11-09 06:19:35,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:19:35,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:35,149 INFO L87 Difference]: Start difference. First operand 3932 states and 15850 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:35,437 INFO L93 Difference]: Finished difference Result 3932 states and 15850 transitions. [2024-11-09 06:19:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:19:35,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 06:19:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:35,454 INFO L225 Difference]: With dead ends: 3932 [2024-11-09 06:19:35,455 INFO L226 Difference]: Without dead ends: 1484 [2024-11-09 06:19:35,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:35,461 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 67 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:35,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 35 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2024-11-09 06:19:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1484. [2024-11-09 06:19:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.6803776129467294) internal successors, (5458), 1483 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5458 transitions. [2024-11-09 06:19:35,545 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5458 transitions. Word has length 15 [2024-11-09 06:19:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:35,546 INFO L471 AbstractCegarLoop]: Abstraction has 1484 states and 5458 transitions. [2024-11-09 06:19:35,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5458 transitions. [2024-11-09 06:19:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:19:35,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:35,548 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:35,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:19:35,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:35,749 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:35,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1130069277, now seen corresponding path program 1 times [2024-11-09 06:19:35,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:35,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138039280] [2024-11-09 06:19:35,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:35,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:35,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:19:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:35,863 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:19:35,867 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:19:35,868 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 06:19:35,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 06:19:35,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-09 06:19:35,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:19:35,869 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 06:19:35,869 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:19:35,869 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 06:19:35,901 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:19:35,905 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 44 transitions, 124 flow [2024-11-09 06:19:39,572 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54339 states, 54334 states have (on average 5.543858357566164) internal successors, (301220), 54338 states have internal predecessors, (301220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:39,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:19:39,578 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;@df8cd9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:19:39,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 06:19:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 54339 states, 54334 states have (on average 5.543858357566164) internal successors, (301220), 54338 states have internal predecessors, (301220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:19:39,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:39,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:39,688 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:39,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1402463142, now seen corresponding path program 1 times [2024-11-09 06:19:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:39,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883075074] [2024-11-09 06:19:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:39,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883075074] [2024-11-09 06:19:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883075074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:39,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:19:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269534262] [2024-11-09 06:19:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:39,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:19:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:39,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:19:39,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:39,985 INFO L87 Difference]: Start difference. First operand has 54339 states, 54334 states have (on average 5.543858357566164) internal successors, (301220), 54338 states have internal predecessors, (301220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:41,827 INFO L93 Difference]: Finished difference Result 54339 states and 301220 transitions. [2024-11-09 06:19:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:19:41,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:19:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:43,078 INFO L225 Difference]: With dead ends: 54339 [2024-11-09 06:19:43,079 INFO L226 Difference]: Without dead ends: 54332 [2024-11-09 06:19:43,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:43,102 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:43,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54332 states. [2024-11-09 06:19:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54332 to 54332. [2024-11-09 06:19:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54332 states, 54328 states have (on average 5.544286555735533) internal successors, (301210), 54331 states have internal predecessors, (301210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54332 states to 54332 states and 301210 transitions. [2024-11-09 06:19:47,000 INFO L78 Accepts]: Start accepts. Automaton has 54332 states and 301210 transitions. Word has length 7 [2024-11-09 06:19:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:47,000 INFO L471 AbstractCegarLoop]: Abstraction has 54332 states and 301210 transitions. [2024-11-09 06:19:47,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 54332 states and 301210 transitions. [2024-11-09 06:19:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:19:47,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:47,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:47,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:19:47,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:47,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1280336664, now seen corresponding path program 1 times [2024-11-09 06:19:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661360359] [2024-11-09 06:19:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:47,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:47,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661360359] [2024-11-09 06:19:47,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661360359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:47,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:47,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:19:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187366693] [2024-11-09 06:19:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:47,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:19:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:47,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:19:47,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:47,068 INFO L87 Difference]: Start difference. First operand 54332 states and 301210 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:50,108 INFO L93 Difference]: Finished difference Result 80540 states and 447130 transitions. [2024-11-09 06:19:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:19:50,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 06:19:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:50,837 INFO L225 Difference]: With dead ends: 80540 [2024-11-09 06:19:50,837 INFO L226 Difference]: Without dead ends: 63068 [2024-11-09 06:19:50,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:50,910 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:50,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 42 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63068 states. [2024-11-09 06:19:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63068 to 63068. [2024-11-09 06:19:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63068 states, 63064 states have (on average 5.5244513510085) internal successors, (348394), 63067 states have internal predecessors, (348394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63068 states to 63068 states and 348394 transitions. [2024-11-09 06:19:55,135 INFO L78 Accepts]: Start accepts. Automaton has 63068 states and 348394 transitions. Word has length 13 [2024-11-09 06:19:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:55,135 INFO L471 AbstractCegarLoop]: Abstraction has 63068 states and 348394 transitions. [2024-11-09 06:19:55,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 63068 states and 348394 transitions. [2024-11-09 06:19:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:19:55,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:55,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:55,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:19:55,138 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:55,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2012090110, now seen corresponding path program 1 times [2024-11-09 06:19:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:55,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968093092] [2024-11-09 06:19:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:55,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:19:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968093092] [2024-11-09 06:19:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968093092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863529534] [2024-11-09 06:19:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:55,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:55,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:55,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:19:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:55,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:19:55,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:55,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863529534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:55,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1430368112] [2024-11-09 06:19:55,403 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 06:19:55,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:19:55,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 06:19:55,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353376496] [2024-11-09 06:19:55,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:19:55,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:19:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:55,409 INFO L87 Difference]: Start difference. First operand 63068 states and 348394 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:57,026 INFO L93 Difference]: Finished difference Result 63068 states and 348394 transitions. [2024-11-09 06:19:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:19:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 06:19:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:57,441 INFO L225 Difference]: With dead ends: 63068 [2024-11-09 06:19:57,441 INFO L226 Difference]: Without dead ends: 23756 [2024-11-09 06:19:57,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:57,537 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 98 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:57,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 72 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23756 states. [2024-11-09 06:19:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23756 to 23756. [2024-11-09 06:19:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23756 states, 23755 states have (on average 5.176257629972637) internal successors, (122962), 23755 states have internal predecessors, (122962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23756 states to 23756 states and 122962 transitions. [2024-11-09 06:19:59,143 INFO L78 Accepts]: Start accepts. Automaton has 23756 states and 122962 transitions. Word has length 15 [2024-11-09 06:19:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:59,143 INFO L471 AbstractCegarLoop]: Abstraction has 23756 states and 122962 transitions. [2024-11-09 06:19:59,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 23756 states and 122962 transitions. [2024-11-09 06:19:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 06:19:59,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:59,155 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:59,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:19:59,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_062a39ca-3683-4112-9254-870f10e6e732/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:59,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 06:19:59,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1804293574, now seen corresponding path program 1 times [2024-11-09 06:19:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:19:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818671328] [2024-11-09 06:19:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:59,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:19:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:19:59,386 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:19:59,386 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:19:59,387 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 06:19:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 06:19:59,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-09 06:19:59,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:19:59,388 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 06:19:59,388 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:19:59,388 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 06:19:59,411 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:19:59,413 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 52 transitions, 160 flow