./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/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_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:20:16,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:20:16,200 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 01:20:16,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:20:16,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:20:16,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:20:16,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:20:16,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:20:16,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:20:16,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:20:16,234 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:20:16,234 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:20:16,235 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:20:16,235 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:20:16,236 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:20:16,236 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:20:16,236 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:20:16,237 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:20:16,237 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:20:16,238 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:20:16,238 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:20:16,239 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:20:16,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 01:20:16,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 01:20:16,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:20:16,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:20:16,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:20:16,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:20:16,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:20:16,243 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 01:20:16,243 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 01:20:16,244 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 01:20:16,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:20:16,244 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 01:20:16,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:20:16,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:20:16,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:20:16,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:20:16,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:20:16,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:20:16,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:20:16,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:20:16,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:20:16,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:20:16,249 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:20:16,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:20:16,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:20:16,249 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:20:16,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:20:16,250 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_c4b42c26-728e-49c2-b042-c8d2daca63da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2024-11-09 01:20:16,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:20:16,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:20:16,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:20:16,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:20:16,605 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:20:16,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i Unable to find full path for "g++" [2024-11-09 01:20:18,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:20:18,887 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:20:18,888 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-11-09 01:20:18,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/data/63abac7e9/a17df8b4699443fcb945b9e61b71798d/FLAG213ee9608 [2024-11-09 01:20:18,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/data/63abac7e9/a17df8b4699443fcb945b9e61b71798d [2024-11-09 01:20:18,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:20:18,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:20:18,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:20:18,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:20:18,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:20:18,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:20:18" (1/1) ... [2024-11-09 01:20:18,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f95224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:18, skipping insertion in model container [2024-11-09 01:20:18,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:20:18" (1/1) ... [2024-11-09 01:20:18,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:20:19,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:20:19,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:20:19,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:20:19,655 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:20:19,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19 WrapperNode [2024-11-09 01:20:19,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:20:19,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:20:19,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:20:19,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:20:19,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,712 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-09 01:20:19,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:20:19,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:20:19,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:20:19,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:20:19,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,736 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:20:19,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:20:19,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:20:19,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:20:19,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (1/1) ... [2024-11-09 01:20:19,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:20:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:20:19,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:20:19,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:20:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:20:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:20:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 01:20:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:20:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:20:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 01:20:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 01:20:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:20:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-09 01:20:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:20:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 01:20:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:20:19,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:20:19,827 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 01:20:19,972 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:20:19,975 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:20:20,236 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 01:20:20,236 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:20:20,411 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:20:20,411 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-09 01:20:20,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:20:20 BoogieIcfgContainer [2024-11-09 01:20:20,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:20:20,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:20:20,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:20:20,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:20:20,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:20:18" (1/3) ... [2024-11-09 01:20:20,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2711c277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:20:20, skipping insertion in model container [2024-11-09 01:20:20,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:20:19" (2/3) ... [2024-11-09 01:20:20,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2711c277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:20:20, skipping insertion in model container [2024-11-09 01:20:20,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:20:20" (3/3) ... [2024-11-09 01:20:20,431 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-11-09 01:20:20,464 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:20:20,465 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 01:20:20,465 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 01:20:20,558 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 01:20:20,599 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 68 transitions, 143 flow [2024-11-09 01:20:20,709 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 645 states, 630 states have (on average 2.4793650793650794) internal successors, (1562), 644 states have internal predecessors, (1562), 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 01:20:20,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:20:20,756 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=None, 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;@347ad99d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:20:20,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 01:20:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 645 states, 630 states have (on average 2.4793650793650794) internal successors, (1562), 644 states have internal predecessors, (1562), 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 01:20:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:20,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:20,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:20,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:20,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 10367820, now seen corresponding path program 1 times [2024-11-09 01:20:20,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:20,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911132392] [2024-11-09 01:20:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:21,162 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 01:20:21,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911132392] [2024-11-09 01:20:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911132392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:21,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:21,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438386073] [2024-11-09 01:20:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:21,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:21,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:21,211 INFO L87 Difference]: Start difference. First operand has 645 states, 630 states have (on average 2.4793650793650794) internal successors, (1562), 644 states have internal predecessors, (1562), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:21,368 INFO L93 Difference]: Finished difference Result 1194 states and 2950 transitions. [2024-11-09 01:20:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:20:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:20:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:21,395 INFO L225 Difference]: With dead ends: 1194 [2024-11-09 01:20:21,395 INFO L226 Difference]: Without dead ends: 569 [2024-11-09 01:20:21,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:20:21,408 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:21,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 31 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:20:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-09 01:20:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-11-09 01:20:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 560 states have (on average 1.9982142857142857) internal successors, (1119), 568 states have internal predecessors, (1119), 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 01:20:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1119 transitions. [2024-11-09 01:20:21,499 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1119 transitions. Word has length 4 [2024-11-09 01:20:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:21,499 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 1119 transitions. [2024-11-09 01:20:21,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1119 transitions. [2024-11-09 01:20:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:21,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:21,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:21,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:20:21,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:21,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash 10367821, now seen corresponding path program 1 times [2024-11-09 01:20:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938694159] [2024-11-09 01:20:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:21,701 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 01:20:21,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938694159] [2024-11-09 01:20:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938694159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:21,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:21,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:21,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851662596] [2024-11-09 01:20:21,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:21,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:21,706 INFO L87 Difference]: Start difference. First operand 569 states and 1119 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:21,844 INFO L93 Difference]: Finished difference Result 576 states and 1126 transitions. [2024-11-09 01:20:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:20:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:20:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:21,850 INFO L225 Difference]: With dead ends: 576 [2024-11-09 01:20:21,851 INFO L226 Difference]: Without dead ends: 553 [2024-11-09 01:20:21,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:20:21,853 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:21,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:20:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-09 01:20:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2024-11-09 01:20:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 546 states have (on average 2.0146520146520146) internal successors, (1100), 552 states have internal predecessors, (1100), 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 01:20:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1100 transitions. [2024-11-09 01:20:21,892 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1100 transitions. Word has length 4 [2024-11-09 01:20:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:21,893 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 1100 transitions. [2024-11-09 01:20:21,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1100 transitions. [2024-11-09 01:20:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 01:20:21,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:21,894 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-09 01:20:21,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:20:21,895 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:21,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1310698462, now seen corresponding path program 1 times [2024-11-09 01:20:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215096811] [2024-11-09 01:20:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:22,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215096811] [2024-11-09 01:20:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215096811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:20:22,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146972735] [2024-11-09 01:20:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:22,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:20:22,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:20:22,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:20:22,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:20:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:22,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:20:22,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:20:22,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:20:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:22,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:20:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:22,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146972735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:20:22,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2135659857] [2024-11-09 01:20:22,657 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 01:20:22,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:20:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-09 01:20:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650385203] [2024-11-09 01:20:22,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:20:22,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 01:20:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 01:20:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:20:22,665 INFO L87 Difference]: Start difference. First operand 553 states and 1100 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 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 01:20:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:22,798 INFO L93 Difference]: Finished difference Result 553 states and 1100 transitions. [2024-11-09 01:20:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:20:22,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 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 9 [2024-11-09 01:20:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:22,801 INFO L225 Difference]: With dead ends: 553 [2024-11-09 01:20:22,801 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 01:20:22,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-09 01:20:22,806 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:22,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 42 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:20:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 01:20:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-09 01:20:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.7589285714285714) internal successors, (197), 112 states have internal predecessors, (197), 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 01:20:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 197 transitions. [2024-11-09 01:20:22,819 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 197 transitions. Word has length 9 [2024-11-09 01:20:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:22,819 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 197 transitions. [2024-11-09 01:20:22,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 8 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 01:20:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 197 transitions. [2024-11-09 01:20:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 01:20:22,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:22,822 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2024-11-09 01:20:22,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:20:23,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:20:23,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:23,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1976946963, now seen corresponding path program 1 times [2024-11-09 01:20:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:23,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295514631] [2024-11-09 01:20:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:20:23,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 01:20:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:20:23,096 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 01:20:23,097 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 01:20:23,098 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 01:20:23,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-09 01:20:23,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-09 01:20:23,102 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-09 01:20:23,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-09 01:20:23,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-09 01:20:23,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 7 remaining) [2024-11-09 01:20:23,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 01:20:23,109 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 01:20:23,114 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 01:20:23,115 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 01:20:23,146 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 01:20:23,154 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 93 transitions, 202 flow [2024-11-09 01:20:23,748 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11859 states, 11833 states have (on average 3.6764979295191416) internal successors, (43504), 11858 states have internal predecessors, (43504), 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 01:20:23,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:20:23,750 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=None, 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;@347ad99d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:20:23,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 01:20:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 11859 states, 11833 states have (on average 3.6764979295191416) internal successors, (43504), 11858 states have internal predecessors, (43504), 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 01:20:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:23,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:23,785 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:23,785 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:23,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 13230732, now seen corresponding path program 1 times [2024-11-09 01:20:23,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:23,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285399550] [2024-11-09 01:20:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:23,839 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 01:20:23,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285399550] [2024-11-09 01:20:23,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285399550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:23,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:23,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009649624] [2024-11-09 01:20:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:23,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:23,871 INFO L87 Difference]: Start difference. First operand has 11859 states, 11833 states have (on average 3.6764979295191416) internal successors, (43504), 11858 states have internal predecessors, (43504), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:24,531 INFO L93 Difference]: Finished difference Result 22545 states and 83700 transitions. [2024-11-09 01:20:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:20:24,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:20:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:24,725 INFO L225 Difference]: With dead ends: 22545 [2024-11-09 01:20:24,725 INFO L226 Difference]: Without dead ends: 10451 [2024-11-09 01:20:24,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:20:24,747 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:24,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 47 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:20:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10451 states. [2024-11-09 01:20:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10451 to 10451. [2024-11-09 01:20:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10451 states, 10436 states have (on average 2.895458029896512) internal successors, (30217), 10450 states have internal predecessors, (30217), 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 01:20:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10451 states to 10451 states and 30217 transitions. [2024-11-09 01:20:25,247 INFO L78 Accepts]: Start accepts. Automaton has 10451 states and 30217 transitions. Word has length 4 [2024-11-09 01:20:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:25,247 INFO L471 AbstractCegarLoop]: Abstraction has 10451 states and 30217 transitions. [2024-11-09 01:20:25,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10451 states and 30217 transitions. [2024-11-09 01:20:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:25,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:25,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:25,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 01:20:25,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:25,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash 13230733, now seen corresponding path program 1 times [2024-11-09 01:20:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:25,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542363556] [2024-11-09 01:20:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:25,341 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 01:20:25,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542363556] [2024-11-09 01:20:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542363556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151980028] [2024-11-09 01:20:25,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:25,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:25,345 INFO L87 Difference]: Start difference. First operand 10451 states and 30217 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:25,541 INFO L93 Difference]: Finished difference Result 10458 states and 30224 transitions. [2024-11-09 01:20:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:20:25,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:20:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:25,712 INFO L225 Difference]: With dead ends: 10458 [2024-11-09 01:20:25,712 INFO L226 Difference]: Without dead ends: 10435 [2024-11-09 01:20:25,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:20:25,724 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:25,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 60 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:20:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2024-11-09 01:20:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10435. [2024-11-09 01:20:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10435 states, 10422 states have (on average 2.897524467472654) internal successors, (30198), 10434 states have internal predecessors, (30198), 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 01:20:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10435 states to 10435 states and 30198 transitions. [2024-11-09 01:20:26,419 INFO L78 Accepts]: Start accepts. Automaton has 10435 states and 30198 transitions. Word has length 4 [2024-11-09 01:20:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:26,420 INFO L471 AbstractCegarLoop]: Abstraction has 10435 states and 30198 transitions. [2024-11-09 01:20:26,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10435 states and 30198 transitions. [2024-11-09 01:20:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 01:20:26,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:26,421 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-09 01:20:26,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 01:20:26,422 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:26,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -995239342, now seen corresponding path program 1 times [2024-11-09 01:20:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357615095] [2024-11-09 01:20:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:26,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357615095] [2024-11-09 01:20:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357615095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:20:26,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035961171] [2024-11-09 01:20:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:26,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:20:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:20:26,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:20:26,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:20:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:26,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:20:26,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:20:26,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 01:20:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:26,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:20:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:20:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035961171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:20:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373778210] [2024-11-09 01:20:26,911 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 01:20:26,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:20:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-09 01:20:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668993611] [2024-11-09 01:20:26,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:20:26,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:20:26,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:20:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 01:20:26,917 INFO L87 Difference]: Start difference. First operand 10435 states and 30198 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 01:20:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:27,230 INFO L93 Difference]: Finished difference Result 10587 states and 30487 transitions. [2024-11-09 01:20:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:20:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 9 [2024-11-09 01:20:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:27,287 INFO L225 Difference]: With dead ends: 10587 [2024-11-09 01:20:27,287 INFO L226 Difference]: Without dead ends: 9823 [2024-11-09 01:20:27,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:20:27,294 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 199 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:27,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 151 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:20:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2024-11-09 01:20:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 9823. [2024-11-09 01:20:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9823 states, 9813 states have (on average 2.9193926424131256) internal successors, (28648), 9822 states have internal predecessors, (28648), 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 01:20:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9823 states to 9823 states and 28648 transitions. [2024-11-09 01:20:27,601 INFO L78 Accepts]: Start accepts. Automaton has 9823 states and 28648 transitions. Word has length 9 [2024-11-09 01:20:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:27,602 INFO L471 AbstractCegarLoop]: Abstraction has 9823 states and 28648 transitions. [2024-11-09 01:20:27,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 01:20:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9823 states and 28648 transitions. [2024-11-09 01:20:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 01:20:27,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:27,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1] [2024-11-09 01:20:27,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 01:20:27,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4b42c26-728e-49c2-b042-c8d2daca63da/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:20:27,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:27,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1195599305, now seen corresponding path program 1 times [2024-11-09 01:20:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718732200] [2024-11-09 01:20:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:20:27,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 01:20:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:20:27,858 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 01:20:27,859 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 01:20:27,860 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 01:20:27,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-09 01:20:27,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-09 01:20:27,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-09 01:20:27,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-09 01:20:27,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-09 01:20:27,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 7 remaining) [2024-11-09 01:20:27,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 01:20:27,862 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 01:20:27,863 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 01:20:27,863 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 01:20:27,892 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 01:20:27,897 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 118 transitions, 263 flow [2024-11-09 01:20:36,116 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 217473 states, 217428 states have (on average 4.920635796677521) internal successors, (1069884), 217472 states have internal predecessors, (1069884), 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 01:20:36,119 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:20:36,119 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=None, 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;@347ad99d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:20:36,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 01:20:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 217473 states, 217428 states have (on average 4.920635796677521) internal successors, (1069884), 217472 states have internal predecessors, (1069884), 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 01:20:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:36,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:36,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:36,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:36,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:36,447 INFO L85 PathProgramCache]: Analyzing trace with hash 16863244, now seen corresponding path program 1 times [2024-11-09 01:20:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:36,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249532919] [2024-11-09 01:20:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:36,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:36,484 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 01:20:36,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:36,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249532919] [2024-11-09 01:20:36,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249532919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:36,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:36,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852424063] [2024-11-09 01:20:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:36,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:36,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:36,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:36,885 INFO L87 Difference]: Start difference. First operand has 217473 states, 217428 states have (on average 4.920635796677521) internal successors, (1069884), 217472 states have internal predecessors, (1069884), 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, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:20:46,454 INFO L93 Difference]: Finished difference Result 415350 states and 2060711 transitions. [2024-11-09 01:20:46,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:20:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:20:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:20:49,987 INFO L225 Difference]: With dead ends: 415350 [2024-11-09 01:20:49,987 INFO L226 Difference]: Without dead ends: 191405 [2024-11-09 01:20:50,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:20:50,380 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 86 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:20:50,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 63 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:20:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191405 states. [2024-11-09 01:20:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191405 to 191405. [2024-11-09 01:20:57,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191405 states, 191380 states have (on average 3.820111819416867) internal successors, (731093), 191404 states have internal predecessors, (731093), 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 01:20:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191405 states to 191405 states and 731093 transitions. [2024-11-09 01:20:59,769 INFO L78 Accepts]: Start accepts. Automaton has 191405 states and 731093 transitions. Word has length 4 [2024-11-09 01:20:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:20:59,770 INFO L471 AbstractCegarLoop]: Abstraction has 191405 states and 731093 transitions. [2024-11-09 01:20:59,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:20:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 191405 states and 731093 transitions. [2024-11-09 01:20:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:20:59,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:20:59,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:20:59,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 01:20:59,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 01:20:59,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:20:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash 16863245, now seen corresponding path program 1 times [2024-11-09 01:20:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:20:59,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223959612] [2024-11-09 01:20:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:20:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:20:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:20:59,839 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 01:20:59,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:20:59,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223959612] [2024-11-09 01:20:59,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223959612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:20:59,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:20:59,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 01:20:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131235726] [2024-11-09 01:20:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:20:59,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:20:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:20:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:20:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:20:59,842 INFO L87 Difference]: Start difference. First operand 191405 states and 731093 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 01:21:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:21:03,316 INFO L93 Difference]: Finished difference Result 191412 states and 731100 transitions. [2024-11-09 01:21:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:21:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 01:21:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:21:05,177 INFO L225 Difference]: With dead ends: 191412 [2024-11-09 01:21:05,177 INFO L226 Difference]: Without dead ends: 191389 [2024-11-09 01:21:05,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 01:21:05,234 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:21:05,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 76 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:21:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191389 states.