./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index-race-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index-race-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b606ed8b0061f7540a480987fb5d0368be6ab145ef928bee0cc134c3bece9590 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:04,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:04,228 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 21:18:04,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:04,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:04,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:04,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:04,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:04,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:04,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:04,298 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:04,299 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:04,312 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:04,313 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:04,314 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:04,314 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:04,315 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:04,316 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:04,317 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:04,317 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:04,318 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:04,319 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:04,320 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:04,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:04,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:04,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:04,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:04,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:04,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:04,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:04,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:04,326 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 21:18:04,327 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:18:04,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:04,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:04,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:04,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:04,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:04,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:04,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:04,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:04,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:04,331 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:04,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:04,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:04,332 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:04,332 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:04,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:04,333 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_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b606ed8b0061f7540a480987fb5d0368be6ab145ef928bee0cc134c3bece9590 [2023-11-23 21:18:04,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:04,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:04,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:04,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:04,653 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:04,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-index-race-2.i [2023-11-23 21:18:07,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:08,028 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:08,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/sv-benchmarks/c/pthread-race-challenges/per-thread-array-index-race-2.i [2023-11-23 21:18:08,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/data/23bc133fa/038a438da9424c7195b5960cbc4b636b/FLAGb63f2a1a1 [2023-11-23 21:18:08,072 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/data/23bc133fa/038a438da9424c7195b5960cbc4b636b [2023-11-23 21:18:08,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:08,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:08,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:08,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:08,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:08,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1da840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08, skipping insertion in model container [2023-11-23 21:18:08,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:08,350 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:08,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:08,735 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:08,763 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:08,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:08,867 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:08,875 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:08,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08 WrapperNode [2023-11-23 21:18:08,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:08,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:08,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:08,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:08,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,970 INFO L138 Inliner]: procedures = 266, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-11-23 21:18:08,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:08,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:08,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:08,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:08,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:08,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:09,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:09,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:09,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:09,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (1/1) ... [2023-11-23 21:18:09,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:09,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:18:09,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:18:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-23 21:18:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-23 21:18:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:09,113 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:18:09,283 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:09,287 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:09,651 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:09,662 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:09,663 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:18:09,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:09 BoogieIcfgContainer [2023-11-23 21:18:09,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:09,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:09,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:09,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:09,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:08" (1/3) ... [2023-11-23 21:18:09,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0f494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:09, skipping insertion in model container [2023-11-23 21:18:09,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:08" (2/3) ... [2023-11-23 21:18:09,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf0f494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:09, skipping insertion in model container [2023-11-23 21:18:09,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:09" (3/3) ... [2023-11-23 21:18:09,675 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-array-index-race-2.i [2023-11-23 21:18:09,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:18:09,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:09,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 21:18:09,696 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:18:09,833 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 21:18:09,872 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 115 transitions, 237 flow [2023-11-23 21:18:09,977 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1237 states, 1207 states have (on average 1.9577464788732395) internal successors, (2363), 1236 states have internal predecessors, (2363), 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) [2023-11-23 21:18:09,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:10,005 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75f1ef46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:10,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 21:18:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 1237 states, 1207 states have (on average 1.9577464788732395) internal successors, (2363), 1236 states have internal predecessors, (2363), 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) [2023-11-23 21:18:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:18:10,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:10,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:10,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:10,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash 526870455, now seen corresponding path program 1 times [2023-11-23 21:18:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826968431] [2023-11-23 21:18:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:10,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:10,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826968431] [2023-11-23 21:18:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826968431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:10,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691145373] [2023-11-23 21:18:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:10,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:10,393 INFO L87 Difference]: Start difference. First operand has 1237 states, 1207 states have (on average 1.9577464788732395) internal successors, (2363), 1236 states have internal predecessors, (2363), 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 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:18:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:10,494 INFO L93 Difference]: Finished difference Result 1236 states and 2319 transitions. [2023-11-23 21:18:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-23 21:18:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:10,529 INFO L225 Difference]: With dead ends: 1236 [2023-11-23 21:18:10,529 INFO L226 Difference]: Without dead ends: 1194 [2023-11-23 21:18:10,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:10,535 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:10,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 204 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:18:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-11-23 21:18:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2023-11-23 21:18:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1167 states have (on average 1.9168808911739503) internal successors, (2237), 1193 states have internal predecessors, (2237), 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) [2023-11-23 21:18:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 2237 transitions. [2023-11-23 21:18:10,664 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 2237 transitions. Word has length 24 [2023-11-23 21:18:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:10,664 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 2237 transitions. [2023-11-23 21:18:10,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:18:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 2237 transitions. [2023-11-23 21:18:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:18:10,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:10,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:10,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:10,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:10,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1200329891, now seen corresponding path program 1 times [2023-11-23 21:18:10,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:10,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930655702] [2023-11-23 21:18:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:11,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930655702] [2023-11-23 21:18:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930655702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:11,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:11,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:11,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274590130] [2023-11-23 21:18:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:11,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:11,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:11,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:11,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:11,592 INFO L87 Difference]: Start difference. First operand 1194 states and 2237 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-11-23 21:18:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:11,935 INFO L93 Difference]: Finished difference Result 1478 states and 2736 transitions. [2023-11-23 21:18:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2023-11-23 21:18:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:11,946 INFO L225 Difference]: With dead ends: 1478 [2023-11-23 21:18:11,947 INFO L226 Difference]: Without dead ends: 1478 [2023-11-23 21:18:11,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:11,949 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 174 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:11,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 263 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:18:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-23 21:18:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1281. [2023-11-23 21:18:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1260 states have (on average 1.9063492063492065) internal successors, (2402), 1280 states have internal predecessors, (2402), 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) [2023-11-23 21:18:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 2402 transitions. [2023-11-23 21:18:12,003 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 2402 transitions. Word has length 36 [2023-11-23 21:18:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:12,004 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 2402 transitions. [2023-11-23 21:18:12,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-11-23 21:18:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 2402 transitions. [2023-11-23 21:18:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:18:12,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:12,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:18:12,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:12,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1167023293, now seen corresponding path program 1 times [2023-11-23 21:18:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:12,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630385248] [2023-11-23 21:18:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:12,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630385248] [2023-11-23 21:18:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630385248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:12,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812956658] [2023-11-23 21:18:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:12,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:12,119 INFO L87 Difference]: Start difference. First operand 1281 states and 2402 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-23 21:18:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:12,153 INFO L93 Difference]: Finished difference Result 1230 states and 2279 transitions. [2023-11-23 21:18:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2023-11-23 21:18:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:12,163 INFO L225 Difference]: With dead ends: 1230 [2023-11-23 21:18:12,164 INFO L226 Difference]: Without dead ends: 1154 [2023-11-23 21:18:12,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:12,171 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 78 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:18:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2023-11-23 21:18:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1140. [2023-11-23 21:18:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1127 states have (on average 1.8890860692102929) internal successors, (2129), 1139 states have internal predecessors, (2129), 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) [2023-11-23 21:18:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 2129 transitions. [2023-11-23 21:18:12,216 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 2129 transitions. Word has length 42 [2023-11-23 21:18:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:12,216 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 2129 transitions. [2023-11-23 21:18:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-23 21:18:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 2129 transitions. [2023-11-23 21:18:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:18:12,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:12,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:18:12,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1170767380, now seen corresponding path program 1 times [2023-11-23 21:18:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836834688] [2023-11-23 21:18:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:12,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836834688] [2023-11-23 21:18:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836834688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44129248] [2023-11-23 21:18:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:18:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:18:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:12,386 INFO L87 Difference]: Start difference. First operand 1140 states and 2129 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2023-11-23 21:18:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:12,441 INFO L93 Difference]: Finished difference Result 1141 states and 2129 transitions. [2023-11-23 21:18:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2023-11-23 21:18:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:12,450 INFO L225 Difference]: With dead ends: 1141 [2023-11-23 21:18:12,450 INFO L226 Difference]: Without dead ends: 1138 [2023-11-23 21:18:12,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:12,460 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:12,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 291 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:18:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-11-23 21:18:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2023-11-23 21:18:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1125 states have (on average 1.8897777777777778) internal successors, (2126), 1137 states have internal predecessors, (2126), 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) [2023-11-23 21:18:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 2126 transitions. [2023-11-23 21:18:12,506 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 2126 transitions. Word has length 43 [2023-11-23 21:18:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:12,508 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 2126 transitions. [2023-11-23 21:18:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2023-11-23 21:18:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 2126 transitions. [2023-11-23 21:18:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:18:12,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:12,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:12,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:18:12,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:12,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 395297287, now seen corresponding path program 1 times [2023-11-23 21:18:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:12,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186310904] [2023-11-23 21:18:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:12,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:13,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:13,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186310904] [2023-11-23 21:18:13,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186310904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:13,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:13,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640423792] [2023-11-23 21:18:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:13,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:13,095 INFO L87 Difference]: Start difference. First operand 1138 states and 2126 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2023-11-23 21:18:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:13,544 INFO L93 Difference]: Finished difference Result 1330 states and 2478 transitions. [2023-11-23 21:18:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2023-11-23 21:18:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:13,555 INFO L225 Difference]: With dead ends: 1330 [2023-11-23 21:18:13,556 INFO L226 Difference]: Without dead ends: 1174 [2023-11-23 21:18:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:13,557 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 166 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:13,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 457 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:18:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-11-23 21:18:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1112. [2023-11-23 21:18:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1099 states have (on average 1.8744313011828935) internal successors, (2060), 1111 states have internal predecessors, (2060), 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) [2023-11-23 21:18:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2060 transitions. [2023-11-23 21:18:13,602 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2060 transitions. Word has length 51 [2023-11-23 21:18:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:13,602 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 2060 transitions. [2023-11-23 21:18:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2023-11-23 21:18:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2060 transitions. [2023-11-23 21:18:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:18:13,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:13,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:13,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:18:13,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-23 21:18:13,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:13,620 INFO L85 PathProgramCache]: Analyzing trace with hash -554430641, now seen corresponding path program 1 times [2023-11-23 21:18:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144421849] [2023-11-23 21:18:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:13,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:13,765 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:18:13,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:13,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-23 21:18:13,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-11-23 21:18:13,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-11-23 21:18:13,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-11-23 21:18:13,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-11-23 21:18:13,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-11-23 21:18:13,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-11-23 21:18:13,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-11-23 21:18:13,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-11-23 21:18:13,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-11-23 21:18:13,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-11-23 21:18:13,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:18:13,779 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-23 21:18:13,782 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:18:13,783 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:18:13,826 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:18:13,836 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 136 transitions, 288 flow [2023-11-23 21:18:14,836 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 25357 states, 25246 states have (on average 2.8478966965063774) internal successors, (71898), 25356 states have internal predecessors, (71898), 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) [2023-11-23 21:18:14,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:14,838 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75f1ef46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:14,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-23 21:18:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 25357 states, 25246 states have (on average 2.8478966965063774) internal successors, (71898), 25356 states have internal predecessors, (71898), 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) [2023-11-23 21:18:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:18:14,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:14,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:14,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:14,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1704440759, now seen corresponding path program 1 times [2023-11-23 21:18:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257317583] [2023-11-23 21:18:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:15,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257317583] [2023-11-23 21:18:15,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257317583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:15,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:15,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022832720] [2023-11-23 21:18:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:15,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:15,081 INFO L87 Difference]: Start difference. First operand has 25357 states, 25246 states have (on average 2.8478966965063774) internal successors, (71898), 25356 states have internal predecessors, (71898), 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 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:18:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:15,638 INFO L93 Difference]: Finished difference Result 25356 states and 71034 transitions. [2023-11-23 21:18:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:15,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-23 21:18:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:15,899 INFO L225 Difference]: With dead ends: 25356 [2023-11-23 21:18:15,900 INFO L226 Difference]: Without dead ends: 25074 [2023-11-23 21:18:15,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:15,901 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:15,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 239 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:18:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25074 states. [2023-11-23 21:18:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25074 to 25074. [2023-11-23 21:18:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25074 states, 24968 states have (on average 2.81448253764819) internal successors, (70272), 25073 states have internal predecessors, (70272), 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) [2023-11-23 21:18:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25074 states to 25074 states and 70272 transitions. [2023-11-23 21:18:17,276 INFO L78 Accepts]: Start accepts. Automaton has 25074 states and 70272 transitions. Word has length 24 [2023-11-23 21:18:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:17,276 INFO L495 AbstractCegarLoop]: Abstraction has 25074 states and 70272 transitions. [2023-11-23 21:18:17,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:18:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 25074 states and 70272 transitions. [2023-11-23 21:18:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:18:17,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:17,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:17,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:18:17,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:17,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1599699293, now seen corresponding path program 1 times [2023-11-23 21:18:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738740780] [2023-11-23 21:18:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:17,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738740780] [2023-11-23 21:18:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738740780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:17,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:17,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753405035] [2023-11-23 21:18:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:17,750 INFO L87 Difference]: Start difference. First operand 25074 states and 70272 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-11-23 21:18:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:18,363 INFO L93 Difference]: Finished difference Result 38238 states and 106564 transitions. [2023-11-23 21:18:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2023-11-23 21:18:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:18,619 INFO L225 Difference]: With dead ends: 38238 [2023-11-23 21:18:18,619 INFO L226 Difference]: Without dead ends: 38238 [2023-11-23 21:18:18,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:18,622 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 285 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:18,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 333 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:18:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38238 states. [2023-11-23 21:18:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38238 to 28521. [2023-11-23 21:18:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28521 states, 28426 states have (on average 2.8132343629071976) internal successors, (79969), 28520 states have internal predecessors, (79969), 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) [2023-11-23 21:18:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28521 states to 28521 states and 79969 transitions. [2023-11-23 21:18:20,236 INFO L78 Accepts]: Start accepts. Automaton has 28521 states and 79969 transitions. Word has length 36 [2023-11-23 21:18:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:20,237 INFO L495 AbstractCegarLoop]: Abstraction has 28521 states and 79969 transitions. [2023-11-23 21:18:20,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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) [2023-11-23 21:18:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 28521 states and 79969 transitions. [2023-11-23 21:18:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:18:20,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:20,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:18:20,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:20,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2013790288, now seen corresponding path program 1 times [2023-11-23 21:18:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:20,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551687496] [2023-11-23 21:18:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:20,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:20,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551687496] [2023-11-23 21:18:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551687496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:20,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398895469] [2023-11-23 21:18:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:20,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:18:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:18:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:20,316 INFO L87 Difference]: Start difference. First operand 28521 states and 79969 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-23 21:18:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:20,483 INFO L93 Difference]: Finished difference Result 25676 states and 71668 transitions. [2023-11-23 21:18:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:18:20,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2023-11-23 21:18:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:20,595 INFO L225 Difference]: With dead ends: 25676 [2023-11-23 21:18:20,596 INFO L226 Difference]: Without dead ends: 25270 [2023-11-23 21:18:20,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:18:20,597 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 97 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 245 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:18:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25270 states. [2023-11-23 21:18:21,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25270 to 25181. [2023-11-23 21:18:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25181 states, 25138 states have (on average 2.800660354841276) internal successors, (70403), 25180 states have internal predecessors, (70403), 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) [2023-11-23 21:18:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25181 states to 25181 states and 70403 transitions. [2023-11-23 21:18:21,622 INFO L78 Accepts]: Start accepts. Automaton has 25181 states and 70403 transitions. Word has length 42 [2023-11-23 21:18:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:21,622 INFO L495 AbstractCegarLoop]: Abstraction has 25181 states and 70403 transitions. [2023-11-23 21:18:21,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-11-23 21:18:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 25181 states and 70403 transitions. [2023-11-23 21:18:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:18:21,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:21,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:18:21,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:21,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1106786716, now seen corresponding path program 1 times [2023-11-23 21:18:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:21,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972212785] [2023-11-23 21:18:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:21,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972212785] [2023-11-23 21:18:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972212785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766271121] [2023-11-23 21:18:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:18:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:18:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:21,747 INFO L87 Difference]: Start difference. First operand 25181 states and 70403 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2023-11-23 21:18:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:22,157 INFO L93 Difference]: Finished difference Result 25182 states and 70403 transitions. [2023-11-23 21:18:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2023-11-23 21:18:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:22,241 INFO L225 Difference]: With dead ends: 25182 [2023-11-23 21:18:22,241 INFO L226 Difference]: Without dead ends: 25179 [2023-11-23 21:18:22,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:22,243 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 34 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 448 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:18:22,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25179 states. [2023-11-23 21:18:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25179 to 25179. [2023-11-23 21:18:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25179 states, 25136 states have (on average 2.800763844684914) internal successors, (70400), 25178 states have internal predecessors, (70400), 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) [2023-11-23 21:18:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25179 states to 25179 states and 70400 transitions. [2023-11-23 21:18:23,019 INFO L78 Accepts]: Start accepts. Automaton has 25179 states and 70400 transitions. Word has length 43 [2023-11-23 21:18:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:23,019 INFO L495 AbstractCegarLoop]: Abstraction has 25179 states and 70400 transitions. [2023-11-23 21:18:23,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2023-11-23 21:18:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 25179 states and 70400 transitions. [2023-11-23 21:18:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:18:23,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:23,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:23,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:18:23,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:23,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash 862203996, now seen corresponding path program 1 times [2023-11-23 21:18:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012206884] [2023-11-23 21:18:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:23,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:23,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012206884] [2023-11-23 21:18:23,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012206884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:23,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:23,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792179990] [2023-11-23 21:18:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:23,466 INFO L87 Difference]: Start difference. First operand 25179 states and 70400 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2023-11-23 21:18:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:24,369 INFO L93 Difference]: Finished difference Result 38765 states and 108959 transitions. [2023-11-23 21:18:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2023-11-23 21:18:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:24,532 INFO L225 Difference]: With dead ends: 38765 [2023-11-23 21:18:24,532 INFO L226 Difference]: Without dead ends: 37829 [2023-11-23 21:18:24,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:24,533 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 258 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:24,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 532 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:18:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37829 states. [2023-11-23 21:18:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37829 to 28724. [2023-11-23 21:18:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28724 states, 28681 states have (on average 2.8118615111049126) internal successors, (80647), 28723 states have internal predecessors, (80647), 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) [2023-11-23 21:18:25,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28724 states to 28724 states and 80647 transitions. [2023-11-23 21:18:25,674 INFO L78 Accepts]: Start accepts. Automaton has 28724 states and 80647 transitions. Word has length 51 [2023-11-23 21:18:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:25,674 INFO L495 AbstractCegarLoop]: Abstraction has 28724 states and 80647 transitions. [2023-11-23 21:18:25,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 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) [2023-11-23 21:18:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 28724 states and 80647 transitions. [2023-11-23 21:18:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:18:25,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:25,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:25,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:18:25,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:25,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:25,679 INFO L85 PathProgramCache]: Analyzing trace with hash -28909326, now seen corresponding path program 1 times [2023-11-23 21:18:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067444377] [2023-11-23 21:18:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:25,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:18:26,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:26,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067444377] [2023-11-23 21:18:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067444377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:26,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:26,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495626289] [2023-11-23 21:18:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:26,259 INFO L87 Difference]: Start difference. First operand 28724 states and 80647 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2023-11-23 21:18:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:26,797 INFO L93 Difference]: Finished difference Result 30227 states and 84498 transitions. [2023-11-23 21:18:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:26,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2023-11-23 21:18:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:26,932 INFO L225 Difference]: With dead ends: 30227 [2023-11-23 21:18:26,932 INFO L226 Difference]: Without dead ends: 29546 [2023-11-23 21:18:26,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:26,933 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 121 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:26,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 442 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:18:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29546 states. [2023-11-23 21:18:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29546 to 29183. [2023-11-23 21:18:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29183 states, 29141 states have (on average 2.8114340619745377) internal successors, (81928), 29182 states have internal predecessors, (81928), 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) [2023-11-23 21:18:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29183 states to 29183 states and 81928 transitions. [2023-11-23 21:18:27,945 INFO L78 Accepts]: Start accepts. Automaton has 29183 states and 81928 transitions. Word has length 60 [2023-11-23 21:18:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:27,945 INFO L495 AbstractCegarLoop]: Abstraction has 29183 states and 81928 transitions. [2023-11-23 21:18:27,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2023-11-23 21:18:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 29183 states and 81928 transitions. [2023-11-23 21:18:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:18:27,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:27,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:27,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:18:27,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:27,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1797761878, now seen corresponding path program 1 times [2023-11-23 21:18:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003030959] [2023-11-23 21:18:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:27,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:28,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003030959] [2023-11-23 21:18:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003030959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:28,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:28,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:18:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169672210] [2023-11-23 21:18:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:18:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:18:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:18:28,554 INFO L87 Difference]: Start difference. First operand 29183 states and 81928 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 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) [2023-11-23 21:18:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:30,258 INFO L93 Difference]: Finished difference Result 39595 states and 110292 transitions. [2023-11-23 21:18:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:18:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 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 62 [2023-11-23 21:18:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:30,410 INFO L225 Difference]: With dead ends: 39595 [2023-11-23 21:18:30,410 INFO L226 Difference]: Without dead ends: 39265 [2023-11-23 21:18:30,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:18:30,412 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 534 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:30,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1091 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:18:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39265 states. [2023-11-23 21:18:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39265 to 27231. [2023-11-23 21:18:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27231 states, 27190 states have (on average 2.795034939315925) internal successors, (75997), 27230 states have internal predecessors, (75997), 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) [2023-11-23 21:18:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27231 states to 27231 states and 75997 transitions. [2023-11-23 21:18:31,270 INFO L78 Accepts]: Start accepts. Automaton has 27231 states and 75997 transitions. Word has length 62 [2023-11-23 21:18:31,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:31,270 INFO L495 AbstractCegarLoop]: Abstraction has 27231 states and 75997 transitions. [2023-11-23 21:18:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 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) [2023-11-23 21:18:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 27231 states and 75997 transitions. [2023-11-23 21:18:31,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:18:31,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:31,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:31,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:18:31,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:31,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2077409857, now seen corresponding path program 1 times [2023-11-23 21:18:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:31,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983597200] [2023-11-23 21:18:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:18:32,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983597200] [2023-11-23 21:18:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983597200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:18:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633780744] [2023-11-23 21:18:32,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:32,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:32,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:32,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:32,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:18:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:32,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:18:32,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:32,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-23 21:18:32,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:18:32,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:32,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-23 21:18:32,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:18:32,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-23 21:18:32,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:18:32,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-23 21:18:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:18:32,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:18:32,683 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_373 (Array Int Int))) (= (select (select (store |c_#race| c_~datas~0.base v_ArrVal_373) |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|) 0)) (forall ((v_ArrVal_373 (Array Int Int))) (= (select (select (store |c_#race| c_~datas~0.base v_ArrVal_373) |c_ULTIMATE.start_main_~#tids~0#1.base|) (+ |c_ULTIMATE.start_main_~#tids~0#1.offset| 1)) 0))) is different from false [2023-11-23 21:18:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:18:34,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633780744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:18:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722671629] [2023-11-23 21:18:34,883 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$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:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-23 21:18:34,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:18:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-23 21:18:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924402138] [2023-11-23 21:18:34,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:18:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 21:18:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 21:18:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-11-23 21:18:34,888 INFO L87 Difference]: Start difference. First operand 27231 states and 75997 transitions. Second operand has 17 states, 16 states have (on average 6.375) internal successors, (102), 17 states have internal predecessors, (102), 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) [2023-11-23 21:18:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:35,460 INFO L93 Difference]: Finished difference Result 26243 states and 73219 transitions. [2023-11-23 21:18:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:18:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 17 states have internal predecessors, (102), 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 62 [2023-11-23 21:18:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:35,558 INFO L225 Difference]: With dead ends: 26243 [2023-11-23 21:18:35,558 INFO L226 Difference]: Without dead ends: 25183 [2023-11-23 21:18:35,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=130, Invalid=379, Unknown=1, NotChecked=42, Total=552 [2023-11-23 21:18:35,559 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 319 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:35,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 573 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 257 Invalid, 0 Unknown, 130 Unchecked, 0.3s Time] [2023-11-23 21:18:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25183 states. [2023-11-23 21:18:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25183 to 21787. [2023-11-23 21:18:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21787 states, 21767 states have (on average 2.794872972848808) internal successors, (60836), 21786 states have internal predecessors, (60836), 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) [2023-11-23 21:18:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21787 states to 21787 states and 60836 transitions. [2023-11-23 21:18:36,383 INFO L78 Accepts]: Start accepts. Automaton has 21787 states and 60836 transitions. Word has length 62 [2023-11-23 21:18:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:36,383 INFO L495 AbstractCegarLoop]: Abstraction has 21787 states and 60836 transitions. [2023-11-23 21:18:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.375) internal successors, (102), 17 states have internal predecessors, (102), 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) [2023-11-23 21:18:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21787 states and 60836 transitions. [2023-11-23 21:18:36,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 21:18:36,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:36,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:36,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:18:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:18:36,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:36,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:36,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1353583908, now seen corresponding path program 1 times [2023-11-23 21:18:36,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:36,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183542008] [2023-11-23 21:18:36,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:36,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:18:37,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183542008] [2023-11-23 21:18:37,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183542008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:37,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:37,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:18:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994824685] [2023-11-23 21:18:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:18:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:18:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:37,159 INFO L87 Difference]: Start difference. First operand 21787 states and 60836 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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) [2023-11-23 21:18:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:38,018 INFO L93 Difference]: Finished difference Result 32489 states and 90201 transitions. [2023-11-23 21:18:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:18:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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 68 [2023-11-23 21:18:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:38,134 INFO L225 Difference]: With dead ends: 32489 [2023-11-23 21:18:38,134 INFO L226 Difference]: Without dead ends: 31462 [2023-11-23 21:18:38,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:18:38,135 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 236 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:38,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 785 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:18:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31462 states. [2023-11-23 21:18:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31462 to 23983. [2023-11-23 21:18:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23983 states, 23963 states have (on average 2.788507282059842) internal successors, (66821), 23982 states have internal predecessors, (66821), 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) [2023-11-23 21:18:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23983 states to 23983 states and 66821 transitions. [2023-11-23 21:18:39,009 INFO L78 Accepts]: Start accepts. Automaton has 23983 states and 66821 transitions. Word has length 68 [2023-11-23 21:18:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:39,009 INFO L495 AbstractCegarLoop]: Abstraction has 23983 states and 66821 transitions. [2023-11-23 21:18:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 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) [2023-11-23 21:18:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 23983 states and 66821 transitions. [2023-11-23 21:18:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 21:18:39,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:39,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:18:39,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-11-23 21:18:39,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2141245828, now seen corresponding path program 1 times [2023-11-23 21:18:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71245117] [2023-11-23 21:18:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:40,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71245117] [2023-11-23 21:18:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71245117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:18:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394675679] [2023-11-23 21:18:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:40,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:40,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da815912-5743-49f8-b480-b2a8c242c04b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:18:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:40,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-23 21:18:40,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:40,445 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 6 treesize of output 5 [2023-11-23 21:18:40,594 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-23 21:18:40,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-23 21:18:41,205 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 21:18:41,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2023-11-23 21:18:41,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:41,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-23 21:18:41,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:18:41,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 21:18:42,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-23 21:18:42,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-23 21:18:42,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 21:18:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:42,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-23 21:18:42,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:42,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-23 21:18:42,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:42,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-23 21:18:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:18:42,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-23 21:18:42,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-23 21:18:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:42,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:18:42,929 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* 4 c_threadThread1of2ForFork0_~i~0))) (and (forall ((v_ArrVal_524 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset .cse0 1)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_524 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset .cse0)))) (forall ((v_ArrVal_524 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset 2 .cse0)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_524 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset 3 .cse0)))))) is different from false [2023-11-23 21:18:43,533 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (* 4 c_threadThread1of2ForFork0_~i~0))) (let ((.cse2 (+ c_~datas~0.offset 3 .cse3))) (let ((.cse0 (store |c_#race| c_~datas~0.base (store (select |c_#race| c_~datas~0.base) .cse2 |c_threadThread1of2ForFork0_#t~nondet4|))) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#tids~0#1.base|) |c_ULTIMATE.start_main_~#tids~0#1.offset|))) (and (forall ((v_ArrVal_524 (Array Int Int)) (v_ArrVal_523 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_523) .cse1 v_ArrVal_524) c_~datas~0.base) .cse2))) (forall ((v_ArrVal_524 (Array Int Int)) (v_ArrVal_523 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_523) .cse1 v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset .cse3 1)))) (forall ((v_ArrVal_524 (Array Int Int)) (v_ArrVal_523 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_523) .cse1 v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset .cse3)))) (forall ((v_ArrVal_524 (Array Int Int)) (v_ArrVal_523 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#tids~0#1.base| v_ArrVal_523) .cse1 v_ArrVal_524) c_~datas~0.base) (+ c_~datas~0.offset 2 .cse3)))))))) is different from false [2023-11-23 21:18:44,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:18:44,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 74 [2023-11-23 21:18:44,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:18:44,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 91 [2023-11-23 21:18:44,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-11-23 21:18:44,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2023-11-23 21:18:44,258 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-11-23 21:18:44,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 1 [2023-11-23 21:18:44,268 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-11-23 21:18:44,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 1 [2023-11-23 21:18:44,278 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-11-23 21:18:44,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 1 [2023-11-23 21:18:45,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 64 [2023-11-23 21:18:45,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-23 21:18:45,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:18:45,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 40 [2023-11-23 21:18:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394675679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:18:45,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302596206] [2023-11-23 21:18:45,334 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$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:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-23 21:18:45,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:18:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 17] total 50 [2023-11-23 21:18:45,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369042314] [2023-11-23 21:18:45,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:18:45,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-23 21:18:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:45,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-23 21:18:45,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1970, Unknown=131, NotChecked=190, Total=2550 [2023-11-23 21:18:45,341 INFO L87 Difference]: Start difference. First operand 23983 states and 66821 transitions. Second operand has 51 states, 50 states have (on average 3.4) internal successors, (170), 51 states have internal predecessors, (170), 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)