./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/01b_inc-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/01b_inc-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh --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 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:52:46,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:52:46,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 15:52:46,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:52:46,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:52:46,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:52:46,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:52:46,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:52:46,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:52:46,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:52:46,459 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:52:46,460 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:52:46,461 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:52:46,461 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:52:46,462 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:52:46,462 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:52:46,463 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:52:46,463 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:52:46,464 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:52:46,464 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:52:46,465 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:52:46,467 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:52:46,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:52:46,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:52:46,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:52:46,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:52:46,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:52:46,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:52:46,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:52:46,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:52:46,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:52:46,471 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 15:52:46,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:52:46,472 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:52:46,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:52:46,472 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:52:46,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:52:46,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:52:46,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:52:46,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:52:46,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:52:46,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:52:46,474 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:52:46,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:52:46,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:52:46,475 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:52:46,475 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:52:46,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:52:46,475 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_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 [2023-12-02 15:52:46,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:52:46,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:52:46,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:52:46,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:52:46,712 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:52:46,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2023-12-02 15:52:49,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:52:49,684 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:52:49,685 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2023-12-02 15:52:49,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/data/dad37dcb7/9fe07ebf780e46258fc1e6ec182d0fdb/FLAG5a7694c14 [2023-12-02 15:52:49,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/data/dad37dcb7/9fe07ebf780e46258fc1e6ec182d0fdb [2023-12-02 15:52:49,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:52:49,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:52:49,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:52:49,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:52:49,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:52:49,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:52:49" (1/1) ... [2023-12-02 15:52:49,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666aeb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:49, skipping insertion in model container [2023-12-02 15:52:49,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:52:49" (1/1) ... [2023-12-02 15:52:49,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:52:50,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:52:50,115 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:52:50,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:52:50,187 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:52:50,187 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:52:50,193 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:52:50,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50 WrapperNode [2023-12-02 15:52:50,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:52:50,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:52:50,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:52:50,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:52:50,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,233 INFO L138 Inliner]: procedures = 164, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2023-12-02 15:52:50,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:52:50,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:52:50,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:52:50,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:52:50,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:52:50,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:52:50,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:52:50,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:52:50,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (1/1) ... [2023-12-02 15:52:50,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:52:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:52:50,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:52:50,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1f4dd1f-5254-478b-bae9-7e4e4810dc6a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:52:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 15:52:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 15:52:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:52:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 15:52:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 15:52:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 15:52:50,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:52:50,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:52:50,324 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 15:52:50,452 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:52:50,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:52:50,588 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:52:50,639 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:52:50,639 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:52:50,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:52:50 BoogieIcfgContainer [2023-12-02 15:52:50,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:52:50,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:52:50,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:52:50,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:52:50,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:52:49" (1/3) ... [2023-12-02 15:52:50,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab7dd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:52:50, skipping insertion in model container [2023-12-02 15:52:50,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:52:50" (2/3) ... [2023-12-02 15:52:50,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab7dd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:52:50, skipping insertion in model container [2023-12-02 15:52:50,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:52:50" (3/3) ... [2023-12-02 15:52:50,649 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2023-12-02 15:52:50,655 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 15:52:50,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:52:50,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 15:52:50,664 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 15:52:50,707 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 15:52:50,734 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 56 transitions, 116 flow [2023-12-02 15:52:50,773 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 322 states, 313 states have (on average 1.9488817891373802) internal successors, (610), 321 states have internal predecessors, (610), 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) [2023-12-02 15:52:50,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:52:50,792 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;@2dc0d3a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:52:50,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-02 15:52:50,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 313 states have (on average 1.9488817891373802) internal successors, (610), 321 states have internal predecessors, (610), 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) [2023-12-02 15:52:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 15:52:50,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:50,801 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] [2023-12-02 15:52:50,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-12-02 15:52:50,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash 640316771, now seen corresponding path program 1 times [2023-12-02 15:52:50,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:50,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167843738] [2023-12-02 15:52:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:52:51,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167843738] [2023-12-02 15:52:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167843738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:51,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:52:51,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:52:51,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380751445] [2023-12-02 15:52:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:51,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:52:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:52:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:52:51,047 INFO L87 Difference]: Start difference. First operand has 322 states, 313 states have (on average 1.9488817891373802) internal successors, (610), 321 states have internal predecessors, (610), 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 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:52:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:51,096 INFO L93 Difference]: Finished difference Result 182 states and 322 transitions. [2023-12-02 15:52:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:52:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2023-12-02 15:52:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:51,108 INFO L225 Difference]: With dead ends: 182 [2023-12-02 15:52:51,109 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:52:51,110 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 [2023-12-02 15:52:51,114 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:51,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 72 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:52:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:52:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 15:52:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.7790055248618784) internal successors, (322), 181 states have internal predecessors, (322), 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) [2023-12-02 15:52:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 322 transitions. [2023-12-02 15:52:51,177 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 322 transitions. Word has length 28 [2023-12-02 15:52:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:51,177 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 322 transitions. [2023-12-02 15:52:51,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:52:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 322 transitions. [2023-12-02 15:52:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:52:51,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:51,179 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 15:52:51,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:52:51,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-12-02 15:52:51,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1967972451, now seen corresponding path program 1 times [2023-12-02 15:52:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320097536] [2023-12-02 15:52:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:52:51,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:52:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:52:51,249 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:52:51,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:52:51,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-12-02 15:52:51,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-12-02 15:52:51,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-12-02 15:52:51,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-12-02 15:52:51,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-12-02 15:52:51,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-12-02 15:52:51,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-12-02 15:52:51,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-12-02 15:52:51,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-12-02 15:52:51,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:52:51,258 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:52:51,260 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 15:52:51,260 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 15:52:51,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 15:52:51,291 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 81 transitions, 172 flow [2023-12-02 15:52:51,589 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8146 states, 8093 states have (on average 2.968244161621154) internal successors, (24022), 8145 states have internal predecessors, (24022), 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) [2023-12-02 15:52:51,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:52:51,592 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;@2dc0d3a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:52:51,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 15:52:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 8146 states, 8093 states have (on average 2.968244161621154) internal successors, (24022), 8145 states have internal predecessors, (24022), 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) [2023-12-02 15:52:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 15:52:51,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:51,613 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] [2023-12-02 15:52:51,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-12-02 15:52:51,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2107014597, now seen corresponding path program 1 times [2023-12-02 15:52:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:51,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360606384] [2023-12-02 15:52:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:52:51,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360606384] [2023-12-02 15:52:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360606384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:52:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:52:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960779157] [2023-12-02 15:52:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:52:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:52:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:52:51,717 INFO L87 Difference]: Start difference. First operand has 8146 states, 8093 states have (on average 2.968244161621154) internal successors, (24022), 8145 states have internal predecessors, (24022), 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 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:52:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:51,849 INFO L93 Difference]: Finished difference Result 4130 states and 11582 transitions. [2023-12-02 15:52:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:52:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2023-12-02 15:52:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:51,884 INFO L225 Difference]: With dead ends: 4130 [2023-12-02 15:52:51,885 INFO L226 Difference]: Without dead ends: 4130 [2023-12-02 15:52:51,885 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 [2023-12-02 15:52:51,887 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 40 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:51,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 117 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:52:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2023-12-02 15:52:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3650. [2023-12-02 15:52:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3645 states have (on average 2.7989026063100138) internal successors, (10202), 3649 states have internal predecessors, (10202), 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) [2023-12-02 15:52:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 10202 transitions. [2023-12-02 15:52:52,074 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 10202 transitions. Word has length 28 [2023-12-02 15:52:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:52,075 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 10202 transitions. [2023-12-02 15:52:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:52:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 10202 transitions. [2023-12-02 15:52:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 15:52:52,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:52,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:52:52,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:52:52,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-12-02 15:52:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1074211882, now seen corresponding path program 1 times [2023-12-02 15:52:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891512804] [2023-12-02 15:52:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:52:52,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:52:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:52:52,128 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:52:52,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:52:52,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-12-02 15:52:52,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-12-02 15:52:52,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-12-02 15:52:52,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-12-02 15:52:52,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-12-02 15:52:52,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-12-02 15:52:52,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-12-02 15:52:52,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-12-02 15:52:52,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-12-02 15:52:52,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-12-02 15:52:52,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-12-02 15:52:52,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-12-02 15:52:52,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-12-02 15:52:52,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:52:52,132 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:52:52,133 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 15:52:52,133 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-02 15:52:52,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 15:52:52,167 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 109 places, 106 transitions, 230 flow [2023-12-02 15:52:57,552 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 199810 states, 199533 states have (on average 3.964086141139561) internal successors, (790966), 199809 states have internal predecessors, (790966), 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) [2023-12-02 15:52:57,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:52:57,554 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;@2dc0d3a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:52:57,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-12-02 15:52:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 199810 states, 199533 states have (on average 3.964086141139561) internal successors, (790966), 199809 states have internal predecessors, (790966), 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) [2023-12-02 15:52:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 15:52:57,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:57,789 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] [2023-12-02 15:52:57,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-12-02 15:52:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 739858899, now seen corresponding path program 1 times [2023-12-02 15:52:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724292558] [2023-12-02 15:52:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:52:57,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:57,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724292558] [2023-12-02 15:52:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724292558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:57,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:52:57,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:52:57,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925271685] [2023-12-02 15:52:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:52:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:52:57,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:52:58,379 INFO L87 Difference]: Start difference. First operand has 199810 states, 199533 states have (on average 3.964086141139561) internal successors, (790966), 199809 states have internal predecessors, (790966), 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 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:52:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:59,773 INFO L93 Difference]: Finished difference Result 103058 states and 385938 transitions. [2023-12-02 15:52:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:52:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2023-12-02 15:52:59,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:53:00,704 INFO L225 Difference]: With dead ends: 103058 [2023-12-02 15:53:00,704 INFO L226 Difference]: Without dead ends: 103058 [2023-12-02 15:53:00,704 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 [2023-12-02 15:53:00,705 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 57 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:53:00,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 148 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:53:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103058 states. [2023-12-02 15:53:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103058 to 83198. [2023-12-02 15:53:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83198 states, 83179 states have (on average 3.7536878298609024) internal successors, (312228), 83197 states have internal predecessors, (312228), 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) [2023-12-02 15:53:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83198 states to 83198 states and 312228 transitions. [2023-12-02 15:53:04,190 INFO L78 Accepts]: Start accepts. Automaton has 83198 states and 312228 transitions. Word has length 28 [2023-12-02 15:53:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:53:04,191 INFO L495 AbstractCegarLoop]: Abstraction has 83198 states and 312228 transitions. [2023-12-02 15:53:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-12-02 15:53:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 83198 states and 312228 transitions. [2023-12-02 15:53:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 15:53:04,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:53:04,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:53:04,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:53:04,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-12-02 15:53:04,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:53:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1275884343, now seen corresponding path program 1 times [2023-12-02 15:53:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:53:04,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69147987] [2023-12-02 15:53:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:53:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:53:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:53:04,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:53:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:53:04,236 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:53:04,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:53:04,236 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-12-02 15:53:04,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-12-02 15:53:04,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-12-02 15:53:04,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-12-02 15:53:04,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-12-02 15:53:04,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-12-02 15:53:04,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-12-02 15:53:04,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-12-02 15:53:04,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-12-02 15:53:04,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-12-02 15:53:04,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-12-02 15:53:04,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-12-02 15:53:04,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-12-02 15:53:04,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-12-02 15:53:04,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-12-02 15:53:04,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-12-02 15:53:04,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-12-02 15:53:04,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 15:53:04,240 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 15:53:04,241 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 15:53:04,241 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-02 15:53:04,274 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 15:53:04,277 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 135 places, 131 transitions, 290 flow