./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:39:37,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:39:37,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:39:37,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:39:37,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:39:37,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:39:37,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:39:37,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:39:37,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:39:37,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:39:37,724 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:39:37,725 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:39:37,725 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:39:37,726 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:39:37,726 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:39:37,726 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:39:37,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:39:37,727 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:39:37,728 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:39:37,728 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:39:37,729 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:39:37,729 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:39:37,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:39:37,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:39:37,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:39:37,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:39:37,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:39:37,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:39:37,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:39:37,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:39:37,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:39:37,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:39:37,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:39:37,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:39:37,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:39:37,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:39:37,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:39:37,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:39:37,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:39:37,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:39:37,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:39:37,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:39:37,742 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:39:37,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:39:37,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:39:37,743 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:39:37,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:39:37,743 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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-09 05:39:38,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:39:38,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:39:38,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:39:38,119 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:39:38,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:39:38,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c Unable to find full path for "g++" [2024-11-09 05:39:40,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:39:40,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:39:40,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-09 05:39:40,536 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/data/fddf4e48d/b1115c5654a9420db5647d71be94cc4e/FLAGa1efdadc6 [2024-11-09 05:39:40,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/data/fddf4e48d/b1115c5654a9420db5647d71be94cc4e [2024-11-09 05:39:40,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:39:40,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:39:40,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:39:40,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:39:40,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:39:40,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:39:40" (1/1) ... [2024-11-09 05:39:40,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f4b639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:40, skipping insertion in model container [2024-11-09 05:39:40,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:39:40" (1/1) ... [2024-11-09 05:39:40,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:39:41,131 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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3331,3344] [2024-11-09 05:39:41,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:39:41,169 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:39:41,216 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_5bae81a6-e577-48ce-9826-8cfb29ce33ce/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3331,3344] [2024-11-09 05:39:41,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:39:41,249 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:39:41,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41 WrapperNode [2024-11-09 05:39:41,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:39:41,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:39:41,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:39:41,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:39:41,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,316 INFO L138 Inliner]: procedures = 25, calls = 40, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 285 [2024-11-09 05:39:41,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:39:41,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:39:41,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:39:41,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:39:41,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:39:41,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:39:41,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:39:41,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:39:41,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (1/1) ... [2024-11-09 05:39:41,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:39:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:39:41,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:39:41,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:39:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:39:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 05:39:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 05:39:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 05:39:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 05:39:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:39:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:39:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:39:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:39:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:39:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:39:41,465 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 05:39:41,601 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:39:41,603 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:39:42,302 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:39:42,303 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:39:42,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:39:42,971 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:39:42,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:39:42 BoogieIcfgContainer [2024-11-09 05:39:42,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:39:42,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:39:42,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:39:42,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:39:42,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:39:40" (1/3) ... [2024-11-09 05:39:42,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8ba0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:39:42, skipping insertion in model container [2024-11-09 05:39:42,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:39:41" (2/3) ... [2024-11-09 05:39:42,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8ba0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:39:42, skipping insertion in model container [2024-11-09 05:39:42,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:39:42" (3/3) ... [2024-11-09 05:39:42,987 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-09 05:39:43,011 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:39:43,012 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:39:43,012 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:39:43,094 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 05:39:43,135 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 34 transitions, 82 flow [2024-11-09 05:39:43,161 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 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 05:39:43,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:39:43,217 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;@1beeb757, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:39:43,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 05:39:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 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 05:39:43,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:39:43,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:43,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:43,231 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 05:39:43,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1945759819, now seen corresponding path program 1 times [2024-11-09 05:39:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:43,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668049691] [2024-11-09 05:39:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:43,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:44,024 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 05:39:44,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668049691] [2024-11-09 05:39:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668049691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:39:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824267316] [2024-11-09 05:39:44,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:44,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:39:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:39:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:39:44,073 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 30 states have internal predecessors, (46), 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 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 05:39:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:44,224 INFO L93 Difference]: Finished difference Result 60 states and 89 transitions. [2024-11-09 05:39:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:39:44,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2024-11-09 05:39:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:44,236 INFO L225 Difference]: With dead ends: 60 [2024-11-09 05:39:44,237 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 05:39:44,240 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 05:39:44,247 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:44,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 05:39:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 05:39:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 states have internal predecessors, (45), 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 05:39:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 45 transitions. [2024-11-09 05:39:44,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 45 transitions. Word has length 19 [2024-11-09 05:39:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:44,295 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 45 transitions. [2024-11-09 05:39:44,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 05:39:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2024-11-09 05:39:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:39:44,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:44,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:44,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:39:44,297 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 05:39:44,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:44,298 INFO L85 PathProgramCache]: Analyzing trace with hash -386552015, now seen corresponding path program 1 times [2024-11-09 05:39:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:44,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475431988] [2024-11-09 05:39:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:44,653 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 05:39:44,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475431988] [2024-11-09 05:39:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475431988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:44,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:44,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271817150] [2024-11-09 05:39:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:44,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:44,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:44,662 INFO L87 Difference]: Start difference. First operand 32 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 05:39:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:44,784 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2024-11-09 05:39:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:44,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2024-11-09 05:39:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:44,786 INFO L225 Difference]: With dead ends: 60 [2024-11-09 05:39:44,786 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:39:44,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:44,790 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:44,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 16 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:39:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-09 05:39:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 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 05:39:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2024-11-09 05:39:44,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 21 [2024-11-09 05:39:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:44,805 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2024-11-09 05:39:44,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 05:39:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2024-11-09 05:39:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 05:39:44,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:44,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:44,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:39:44,810 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 05:39:44,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:44,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1982862318, now seen corresponding path program 1 times [2024-11-09 05:39:44,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:44,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671370754] [2024-11-09 05:39:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:39:45,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671370754] [2024-11-09 05:39:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671370754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55427473] [2024-11-09 05:39:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:45,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:45,113 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 05:39:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:45,220 INFO L93 Difference]: Finished difference Result 57 states and 81 transitions. [2024-11-09 05:39:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2024-11-09 05:39:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:45,222 INFO L225 Difference]: With dead ends: 57 [2024-11-09 05:39:45,222 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:39:45,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:45,226 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 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 05:39:45,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:39:45,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 05:39:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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 05:39:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2024-11-09 05:39:45,244 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 23 [2024-11-09 05:39:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:45,245 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2024-11-09 05:39:45,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 05:39:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2024-11-09 05:39:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:39:45,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:45,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:45,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:39:45,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 05:39:45,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -474051497, now seen corresponding path program 1 times [2024-11-09 05:39:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666800142] [2024-11-09 05:39:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:39:45,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666800142] [2024-11-09 05:39:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666800142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:45,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:45,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:39:45,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417902740] [2024-11-09 05:39:45,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:45,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:45,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:45,549 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 05:39:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:45,668 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2024-11-09 05:39:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:45,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2024-11-09 05:39:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:45,672 INFO L225 Difference]: With dead ends: 56 [2024-11-09 05:39:45,672 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:39:45,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:45,676 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 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 05:39:45,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:39:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 05:39:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 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 05:39:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-11-09 05:39:45,694 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 25 [2024-11-09 05:39:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:45,695 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-11-09 05:39:45,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 05:39:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-11-09 05:39:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:39:45,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:45,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:45,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:39:45,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 05:39:45,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -333298381, now seen corresponding path program 1 times [2024-11-09 05:39:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686065011] [2024-11-09 05:39:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:45,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:39:48,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686065011] [2024-11-09 05:39:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686065011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:48,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:39:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298486654] [2024-11-09 05:39:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:48,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:48,276 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 05:39:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:48,445 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2024-11-09 05:39:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:48,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-09 05:39:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:48,447 INFO L225 Difference]: With dead ends: 43 [2024-11-09 05:39:48,447 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 05:39:48,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:48,449 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:48,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 05:39:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 05:39:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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 05:39:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-09 05:39:48,456 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 27 [2024-11-09 05:39:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:48,456 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-09 05:39:48,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 05:39:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-09 05:39:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:39:48,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:39:48,458 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:39:48,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:39:48,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 05:39:48,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:39:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash 542578151, now seen corresponding path program 2 times [2024-11-09 05:39:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:39:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321032407] [2024-11-09 05:39:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:39:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:39:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:39:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:39:50,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:39:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321032407] [2024-11-09 05:39:50,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321032407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:39:50,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:39:50,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:39:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116526461] [2024-11-09 05:39:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:39:50,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:39:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:39:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:39:50,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:39:50,443 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 05:39:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:39:50,621 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-11-09 05:39:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:39:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-09 05:39:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:39:50,624 INFO L225 Difference]: With dead ends: 32 [2024-11-09 05:39:50,624 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:39:50,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:39:50,626 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:39:50,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:39:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:39:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:39:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 05:39:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:39:50,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2024-11-09 05:39:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:39:50,633 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:39:50,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 05:39:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:39:50,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:39:50,637 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-09 05:39:50,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-09 05:39:50,638 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-09 05:39:50,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:39:50,644 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-09 05:39:50,648 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 05:39:50,648 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:39:50,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:39:50 BasicIcfg [2024-11-09 05:39:50,655 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:39:50,656 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:39:50,656 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:39:50,657 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:39:50,658 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:39:42" (3/4) ... [2024-11-09 05:39:50,661 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:39:50,666 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 05:39:50,667 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 05:39:50,683 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 220 nodes and edges [2024-11-09 05:39:50,686 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2024-11-09 05:39:50,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 05:39:50,687 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 05:39:50,822 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:39:50,823 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:39:50,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:39:50,824 INFO L158 Benchmark]: Toolchain (without parser) took 9986.78ms. Allocated memory was 144.7MB in the beginning and 262.1MB in the end (delta: 117.4MB). Free memory was 109.9MB in the beginning and 211.3MB in the end (delta: -101.4MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,824 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:39:50,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.93ms. Allocated memory is still 144.7MB. Free memory was 109.9MB in the beginning and 95.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 92.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,828 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,829 INFO L158 Benchmark]: RCFGBuilder took 1606.33ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 89.9MB in the beginning and 91.4MB in the end (delta: -1.5MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,829 INFO L158 Benchmark]: TraceAbstraction took 7678.84ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 91.4MB in the beginning and 218.6MB in the end (delta: -127.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:39:50,830 INFO L158 Benchmark]: Witness Printer took 167.46ms. Allocated memory is still 262.1MB. Free memory was 218.6MB in the beginning and 211.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 05:39:50,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.93ms. Allocated memory is still 144.7MB. Free memory was 109.9MB in the beginning and 95.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 92.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1606.33ms. Allocated memory was 144.7MB in the beginning and 180.4MB in the end (delta: 35.7MB). Free memory was 89.9MB in the beginning and 91.4MB in the end (delta: -1.5MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7678.84ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 91.4MB in the beginning and 218.6MB in the end (delta: -127.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 167.46ms. Allocated memory is still 262.1MB. Free memory was 218.6MB in the beginning and 211.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 268 IncrementalHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 60 mSDtfsCounter, 268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 05:39:50,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bae81a6-e577-48ce-9826-8cfb29ce33ce/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE