./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/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_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/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_de241593-215a-4912-9f19-a5cddf1a4cf4/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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:19,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:19,572 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 20:32:19,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:19,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:19,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:19,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:19,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:19,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:19,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:19,631 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:19,631 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:19,632 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:19,634 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:19,635 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:19,635 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:19,636 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:19,636 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:19,637 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:19,637 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:19,638 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:19,639 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:19,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:19,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:19,641 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:19,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:19,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:19,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:19,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:19,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:19,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:19,646 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 20:32:19,646 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:32:19,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:19,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:19,647 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:19,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:19,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:19,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:19,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:19,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:19,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:19,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:19,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:19,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:19,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:19,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:19,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:19,652 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_de241593-215a-4912-9f19-a5cddf1a4cf4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2023-11-23 20:32:19,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:19,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:19,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:19,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:19,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:19,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-23 20:32:23,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:23,709 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:23,709 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-23 20:32:23,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/data/e7733348e/c54e086359ca4085af5da0cfafadeac4/FLAGadb28d21d [2023-11-23 20:32:24,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/data/e7733348e/c54e086359ca4085af5da0cfafadeac4 [2023-11-23 20:32:24,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:24,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:24,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:24,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:24,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:24,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d3bec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24, skipping insertion in model container [2023-11-23 20:32:24,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:24,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:24,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:24,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:24,424 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:24,424 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:32:24,432 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:24,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24 WrapperNode [2023-11-23 20:32:24,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:24,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:24,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:24,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:24,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,532 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 647 [2023-11-23 20:32:24,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:24,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:24,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:24,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:24,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:24,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:24,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:24,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:24,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (1/1) ... [2023-11-23 20:32:24,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:24,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:24,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de241593-215a-4912-9f19-a5cddf1a4cf4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:32:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 20:32:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 20:32:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 20:32:24,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 20:32:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 20:32:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 20:32:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:32:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:32:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:24,732 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 20:32:24,933 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:24,935 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:26,241 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:27,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:27,096 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 20:32:27,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:27 BoogieIcfgContainer [2023-11-23 20:32:27,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:27,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:27,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:27,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:27,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:24" (1/3) ... [2023-11-23 20:32:27,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c58b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:27, skipping insertion in model container [2023-11-23 20:32:27,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:24" (2/3) ... [2023-11-23 20:32:27,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c58b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:27, skipping insertion in model container [2023-11-23 20:32:27,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:27" (3/3) ... [2023-11-23 20:32:27,115 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-11-23 20:32:27,127 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 20:32:27,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:27,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 93 error locations. [2023-11-23 20:32:27,142 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:32:27,367 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 20:32:27,438 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 478 places, 490 transitions, 1001 flow [2023-11-23 20:32:45,288 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 497752 states, 474967 states have (on average 4.21075780001558) internal successors, (1999971), 497751 states have internal predecessors, (1999971), 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 20:32:45,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:45,359 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;@77e33d29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:45,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2023-11-23 20:32:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 497752 states, 474967 states have (on average 4.21075780001558) internal successors, (1999971), 497751 states have internal predecessors, (1999971), 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 20:32:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:32:46,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:46,325 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] [2023-11-23 20:32:46,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE, thread1Err23ASSERT_VIOLATIONDATA_RACE (and 158 more)] === [2023-11-23 20:32:46,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:46,344 INFO L85 PathProgramCache]: Analyzing trace with hash -607752328, now seen corresponding path program 1 times [2023-11-23 20:32:46,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556012629] [2023-11-23 20:32:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:46,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:46,698 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 20:32:46,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556012629] [2023-11-23 20:32:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556012629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:46,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:46,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885189968] [2023-11-23 20:32:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:47,586 INFO L87 Difference]: Start difference. First operand has 497752 states, 474967 states have (on average 4.21075780001558) internal successors, (1999971), 497751 states have internal predecessors, (1999971), 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 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:50,068 INFO L93 Difference]: Finished difference Result 41221 states and 156558 transitions. [2023-11-23 20:32:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-23 20:32:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:51,025 INFO L225 Difference]: With dead ends: 41221 [2023-11-23 20:32:51,026 INFO L226 Difference]: Without dead ends: 41214 [2023-11-23 20:32:51,028 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 20:32:51,033 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:51,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 733 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41214 states. [2023-11-23 20:32:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41214 to 41214. [2023-11-23 20:32:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41214 states, 41180 states have (on average 3.8016270033997084) internal successors, (156551), 41213 states have internal predecessors, (156551), 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 20:32:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41214 states to 41214 states and 156551 transitions. [2023-11-23 20:32:54,852 INFO L78 Accepts]: Start accepts. Automaton has 41214 states and 156551 transitions. Word has length 31 [2023-11-23 20:32:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:54,854 INFO L495 AbstractCegarLoop]: Abstraction has 41214 states and 156551 transitions. [2023-11-23 20:32:54,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 41214 states and 156551 transitions. [2023-11-23 20:32:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 20:32:54,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:54,857 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] [2023-11-23 20:32:54,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:54,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE, thread1Err23ASSERT_VIOLATIONDATA_RACE (and 158 more)] === [2023-11-23 20:32:54,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash 832414295, now seen corresponding path program 1 times [2023-11-23 20:32:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448360827] [2023-11-23 20:32:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:54,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:54,990 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 20:32:54,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448360827] [2023-11-23 20:32:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448360827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:54,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313087946] [2023-11-23 20:32:54,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:54,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:54,996 INFO L87 Difference]: Start difference. First operand 41214 states and 156551 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:55,648 INFO L93 Difference]: Finished difference Result 41213 states and 156550 transitions. [2023-11-23 20:32:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-23 20:32:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:56,053 INFO L225 Difference]: With dead ends: 41213 [2023-11-23 20:32:56,053 INFO L226 Difference]: Without dead ends: 41213 [2023-11-23 20:32:56,054 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 20:32:56,056 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 2 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:56,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 720 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41213 states. [2023-11-23 20:32:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41213 to 41213. [2023-11-23 20:32:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41213 states, 41180 states have (on average 3.801602719766877) internal successors, (156550), 41212 states have internal predecessors, (156550), 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 20:32:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41213 states to 41213 states and 156550 transitions. [2023-11-23 20:32:58,862 INFO L78 Accepts]: Start accepts. Automaton has 41213 states and 156550 transitions. Word has length 39 [2023-11-23 20:32:58,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:58,863 INFO L495 AbstractCegarLoop]: Abstraction has 41213 states and 156550 transitions. [2023-11-23 20:32:58,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 41213 states and 156550 transitions. [2023-11-23 20:32:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 20:32:58,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:58,869 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] [2023-11-23 20:32:58,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:58,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE, thread1Err23ASSERT_VIOLATIONDATA_RACE (and 158 more)] === [2023-11-23 20:32:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1179302368, now seen corresponding path program 1 times [2023-11-23 20:32:58,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:58,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35418661] [2023-11-23 20:32:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:58,988 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 20:32:58,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:58,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35418661] [2023-11-23 20:32:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35418661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:58,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690476427] [2023-11-23 20:32:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:58,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:58,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:58,993 INFO L87 Difference]: Start difference. First operand 41213 states and 156550 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 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 20:33:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:00,300 INFO L93 Difference]: Finished difference Result 41212 states and 156549 transitions. [2023-11-23 20:33:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:00,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-11-23 20:33:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:00,651 INFO L225 Difference]: With dead ends: 41212 [2023-11-23 20:33:00,652 INFO L226 Difference]: Without dead ends: 41212 [2023-11-23 20:33:00,652 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 20:33:00,659 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 718 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41212 states. [2023-11-23 20:33:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41212 to 41212. [2023-11-23 20:33:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41212 states, 41180 states have (on average 3.8015784361340454) internal successors, (156549), 41211 states have internal predecessors, (156549), 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 20:33:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41212 states to 41212 states and 156549 transitions. [2023-11-23 20:33:02,635 INFO L78 Accepts]: Start accepts. Automaton has 41212 states and 156549 transitions. Word has length 47 [2023-11-23 20:33:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 41212 states and 156549 transitions. [2023-11-23 20:33:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 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 20:33:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 41212 states and 156549 transitions. [2023-11-23 20:33:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 20:33:02,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:02,638 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] [2023-11-23 20:33:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:02,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE, thread1Err23ASSERT_VIOLATIONDATA_RACE (and 158 more)] === [2023-11-23 20:33:02,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1313298899, now seen corresponding path program 1 times [2023-11-23 20:33:02,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:02,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159384003] [2023-11-23 20:33:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:02,744 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 20:33:02,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159384003] [2023-11-23 20:33:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159384003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:02,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:02,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:33:02,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687455219] [2023-11-23 20:33:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:02,749 INFO L87 Difference]: Start difference. First operand 41212 states and 156549 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 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 20:33:03,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:03,098 INFO L93 Difference]: Finished difference Result 41211 states and 156548 transitions. [2023-11-23 20:33:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-11-23 20:33:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:03,317 INFO L225 Difference]: With dead ends: 41211 [2023-11-23 20:33:03,317 INFO L226 Difference]: Without dead ends: 41211 [2023-11-23 20:33:03,318 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 20:33:03,329 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:03,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 716 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:33:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41211 states. [2023-11-23 20:33:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41211 to 41211. [2023-11-23 20:33:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41211 states, 41180 states have (on average 3.801554152501214) internal successors, (156548), 41210 states have internal predecessors, (156548), 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 20:33:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41211 states to 41211 states and 156548 transitions. [2023-11-23 20:33:05,343 INFO L78 Accepts]: Start accepts. Automaton has 41211 states and 156548 transitions. Word has length 55 [2023-11-23 20:33:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:05,343 INFO L495 AbstractCegarLoop]: Abstraction has 41211 states and 156548 transitions. [2023-11-23 20:33:05,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 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 20:33:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41211 states and 156548 transitions. [2023-11-23 20:33:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 20:33:05,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:05,346 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] [2023-11-23 20:33:05,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:33:05,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err22ASSERT_VIOLATIONDATA_RACE, thread1Err23ASSERT_VIOLATIONDATA_RACE (and 158 more)] === [2023-11-23 20:33:05,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash -936341345, now seen corresponding path program 1 times [2023-11-23 20:33:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86818737] [2023-11-23 20:33:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:05,449 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 20:33:05,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86818737] [2023-11-23 20:33:05,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86818737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:05,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:05,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:33:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290357146] [2023-11-23 20:33:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:05,454 INFO L87 Difference]: Start difference. First operand 41211 states and 156548 transitions. Second operand has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 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 20:33:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:05,932 INFO L93 Difference]: Finished difference Result 41210 states and 156547 transitions. [2023-11-23 20:33:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.5) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-11-23 20:33:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted.