./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91 --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 b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:28,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:28,448 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-24 23:50:28,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:28,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:28,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:28,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:28,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:28,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:28,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:28,511 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:28,513 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:28,513 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:28,515 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:28,515 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:28,516 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:28,516 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:28,517 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:28,517 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:28,518 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:28,519 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:28,519 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:28,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:28,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:28,522 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:50:28,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:28,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:50:28,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:28,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:28,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:28,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:28,526 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-24 23:50:28,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:50:28,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:50:28,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:28,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:28,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:28,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:28,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:28,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:28,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:28,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:28,530 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:28,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:28,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:28,531 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:28,532 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:28,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:28,532 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_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2023-11-24 23:50:28,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:28,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:28,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:28,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:28,935 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:28,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-24 23:50:31,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:32,383 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:32,384 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2023-11-24 23:50:32,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/data/e81c50296/e1e370ac4edb4f6a98497e0730ef6e3c/FLAG4953e2282 [2023-11-24 23:50:32,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/data/e81c50296/e1e370ac4edb4f6a98497e0730ef6e3c [2023-11-24 23:50:32,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:32,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:32,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:32,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:32,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:32,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:32" (1/1) ... [2023-11-24 23:50:32,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6013c2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:32, skipping insertion in model container [2023-11-24 23:50:32,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:32" (1/1) ... [2023-11-24 23:50:32,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:32,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:32,987 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:33,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:33,117 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:33,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33 WrapperNode [2023-11-24 23:50:33,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:33,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:33,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:33,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:33,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,201 INFO L138 Inliner]: procedures = 223, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 229 [2023-11-24 23:50:33,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:33,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:33,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:33,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:33,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:33,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:33,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:33,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:33,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (1/1) ... [2023-11-24 23:50:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:33,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:33,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:33,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e188567-66c0-4718-8527-8c0fcd13360e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2023-11-24 23:50:33,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2023-11-24 23:50:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:50:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:33,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:33,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:33,369 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:50:33,573 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:33,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:34,180 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:34,196 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:34,196 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:50:34,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:34 BoogieIcfgContainer [2023-11-24 23:50:34,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:34,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:34,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:34,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:34,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:32" (1/3) ... [2023-11-24 23:50:34,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b697d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:34, skipping insertion in model container [2023-11-24 23:50:34,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:33" (2/3) ... [2023-11-24 23:50:34,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b697d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:34, skipping insertion in model container [2023-11-24 23:50:34,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:34" (3/3) ... [2023-11-24 23:50:34,206 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2023-11-24 23:50:34,215 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:50:34,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:34,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-24 23:50:34,226 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:50:34,358 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-24 23:50:34,415 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 270 places, 279 transitions, 565 flow [2023-11-24 23:50:34,785 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10993 states, 10920 states have (on average 2.106868131868132) internal successors, (23007), 10992 states have internal predecessors, (23007), 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) [2023-11-24 23:50:34,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:34,816 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;@756d71d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:34,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-24 23:50:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 10993 states, 10920 states have (on average 2.106868131868132) internal successors, (23007), 10992 states have internal predecessors, (23007), 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) [2023-11-24 23:50:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:50:34,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:34,871 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] [2023-11-24 23:50:34,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:34,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1576024726, now seen corresponding path program 1 times [2023-11-24 23:50:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873121647] [2023-11-24 23:50:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:35,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873121647] [2023-11-24 23:50:35,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873121647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:35,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380180966] [2023-11-24 23:50:35,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:35,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:35,903 INFO L87 Difference]: Start difference. First operand has 10993 states, 10920 states have (on average 2.106868131868132) internal successors, (23007), 10992 states have internal predecessors, (23007), 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 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:36,552 INFO L93 Difference]: Finished difference Result 10484 states and 21133 transitions. [2023-11-24 23:50:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-24 23:50:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:36,660 INFO L225 Difference]: With dead ends: 10484 [2023-11-24 23:50:36,661 INFO L226 Difference]: Without dead ends: 10478 [2023-11-24 23:50:36,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:36,667 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:36,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 670 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:50:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10478 states. [2023-11-24 23:50:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10478 to 10478. [2023-11-24 23:50:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10385 states have (on average 2.0337987481945112) internal successors, (21121), 10477 states have internal predecessors, (21121), 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) [2023-11-24 23:50:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 21121 transitions. [2023-11-24 23:50:37,163 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 21121 transitions. Word has length 27 [2023-11-24 23:50:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:37,164 INFO L495 AbstractCegarLoop]: Abstraction has 10478 states and 21121 transitions. [2023-11-24 23:50:37,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 21121 transitions. [2023-11-24 23:50:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:50:37,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:37,167 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] [2023-11-24 23:50:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:50:37,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:37,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -837296349, now seen corresponding path program 1 times [2023-11-24 23:50:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752367848] [2023-11-24 23:50:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:37,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:37,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752367848] [2023-11-24 23:50:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752367848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912313210] [2023-11-24 23:50:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:37,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:37,694 INFO L87 Difference]: Start difference. First operand 10478 states and 21121 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-11-24 23:50:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:38,014 INFO L93 Difference]: Finished difference Result 10477 states and 21120 transitions. [2023-11-24 23:50:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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 34 [2023-11-24 23:50:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:38,113 INFO L225 Difference]: With dead ends: 10477 [2023-11-24 23:50:38,114 INFO L226 Difference]: Without dead ends: 10477 [2023-11-24 23:50:38,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:38,116 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:38,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 390 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:50:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2023-11-24 23:50:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 10477. [2023-11-24 23:50:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10477 states, 10385 states have (on average 2.0337024554646126) internal successors, (21120), 10476 states have internal predecessors, (21120), 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) [2023-11-24 23:50:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 21120 transitions. [2023-11-24 23:50:38,569 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 21120 transitions. Word has length 34 [2023-11-24 23:50:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:38,570 INFO L495 AbstractCegarLoop]: Abstraction has 10477 states and 21120 transitions. [2023-11-24 23:50:38,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-11-24 23:50:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 21120 transitions. [2023-11-24 23:50:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:50:38,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:38,575 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] [2023-11-24 23:50:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:50:38,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1940054933, now seen corresponding path program 1 times [2023-11-24 23:50:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:38,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516419988] [2023-11-24 23:50:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:39,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:39,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516419988] [2023-11-24 23:50:39,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516419988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:39,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:39,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322597311] [2023-11-24 23:50:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:39,061 INFO L87 Difference]: Start difference. First operand 10477 states and 21120 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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) [2023-11-24 23:50:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:39,891 INFO L93 Difference]: Finished difference Result 12920 states and 26037 transitions. [2023-11-24 23:50:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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 [2023-11-24 23:50:39,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:39,931 INFO L225 Difference]: With dead ends: 12920 [2023-11-24 23:50:39,931 INFO L226 Difference]: Without dead ends: 12920 [2023-11-24 23:50:39,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:39,933 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 280 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:39,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 722 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:50:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12920 states. [2023-11-24 23:50:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12920 to 11077. [2023-11-24 23:50:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 10985 states have (on average 2.032589895311789) internal successors, (22328), 11076 states have internal predecessors, (22328), 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) [2023-11-24 23:50:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 22328 transitions. [2023-11-24 23:50:40,328 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 22328 transitions. Word has length 59 [2023-11-24 23:50:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:40,329 INFO L495 AbstractCegarLoop]: Abstraction has 11077 states and 22328 transitions. [2023-11-24 23:50:40,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 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) [2023-11-24 23:50:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 22328 transitions. [2023-11-24 23:50:40,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-24 23:50:40,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:40,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:40,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:50:40,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:40,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1854149741, now seen corresponding path program 1 times [2023-11-24 23:50:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:40,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24401968] [2023-11-24 23:50:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:40,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:40,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24401968] [2023-11-24 23:50:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24401968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:40,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788404089] [2023-11-24 23:50:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:40,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:40,835 INFO L87 Difference]: Start difference. First operand 11077 states and 22328 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 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) [2023-11-24 23:50:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:41,884 INFO L93 Difference]: Finished difference Result 15747 states and 31824 transitions. [2023-11-24 23:50:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 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 61 [2023-11-24 23:50:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:41,936 INFO L225 Difference]: With dead ends: 15747 [2023-11-24 23:50:41,936 INFO L226 Difference]: Without dead ends: 15747 [2023-11-24 23:50:41,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:41,938 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 404 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:41,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1260 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:50:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15747 states. [2023-11-24 23:50:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15747 to 12424. [2023-11-24 23:50:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12338 states have (on average 2.0290160479818447) internal successors, (25034), 12423 states have internal predecessors, (25034), 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) [2023-11-24 23:50:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 25034 transitions. [2023-11-24 23:50:42,331 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 25034 transitions. Word has length 61 [2023-11-24 23:50:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:42,332 INFO L495 AbstractCegarLoop]: Abstraction has 12424 states and 25034 transitions. [2023-11-24 23:50:42,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 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) [2023-11-24 23:50:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 25034 transitions. [2023-11-24 23:50:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-24 23:50:42,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:42,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:42,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:50:42,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:42,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1321852585, now seen corresponding path program 1 times [2023-11-24 23:50:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449459298] [2023-11-24 23:50:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:42,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:42,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449459298] [2023-11-24 23:50:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449459298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:42,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:50:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224698556] [2023-11-24 23:50:42,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:42,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:50:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:50:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:42,420 INFO L87 Difference]: Start difference. First operand 12424 states and 25034 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-11-24 23:50:42,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:42,600 INFO L93 Difference]: Finished difference Result 21573 states and 43527 transitions. [2023-11-24 23:50:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:50:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-11-24 23:50:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:42,681 INFO L225 Difference]: With dead ends: 21573 [2023-11-24 23:50:42,682 INFO L226 Difference]: Without dead ends: 21573 [2023-11-24 23:50:42,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:50:42,686 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 186 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:42,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 611 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:50:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21573 states. [2023-11-24 23:50:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21573 to 12545. [2023-11-24 23:50:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12459 states have (on average 2.0288145115980414) internal successors, (25277), 12544 states have internal predecessors, (25277), 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) [2023-11-24 23:50:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 25277 transitions. [2023-11-24 23:50:43,245 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 25277 transitions. Word has length 63 [2023-11-24 23:50:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 12545 states and 25277 transitions. [2023-11-24 23:50:43,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-11-24 23:50:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 25277 transitions. [2023-11-24 23:50:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:50:43,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:43,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:50:43,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:43,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash 416682451, now seen corresponding path program 1 times [2023-11-24 23:50:43,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664215441] [2023-11-24 23:50:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:43,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664215441] [2023-11-24 23:50:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664215441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342533706] [2023-11-24 23:50:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:43,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:43,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:43,831 INFO L87 Difference]: Start difference. First operand 12545 states and 25277 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2023-11-24 23:50:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:44,700 INFO L93 Difference]: Finished difference Result 13824 states and 27852 transitions. [2023-11-24 23:50:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:44,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2023-11-24 23:50:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:44,745 INFO L225 Difference]: With dead ends: 13824 [2023-11-24 23:50:44,745 INFO L226 Difference]: Without dead ends: 13807 [2023-11-24 23:50:44,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:44,747 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 262 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:44,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 833 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:50:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13807 states. [2023-11-24 23:50:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13807 to 13072. [2023-11-24 23:50:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13072 states, 12992 states have (on average 2.027170566502463) internal successors, (26337), 13071 states have internal predecessors, (26337), 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) [2023-11-24 23:50:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13072 states to 13072 states and 26337 transitions. [2023-11-24 23:50:45,218 INFO L78 Accepts]: Start accepts. Automaton has 13072 states and 26337 transitions. Word has length 65 [2023-11-24 23:50:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:45,218 INFO L495 AbstractCegarLoop]: Abstraction has 13072 states and 26337 transitions. [2023-11-24 23:50:45,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2023-11-24 23:50:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13072 states and 26337 transitions. [2023-11-24 23:50:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:50:45,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:45,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:45,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:50:45,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -760121077, now seen corresponding path program 1 times [2023-11-24 23:50:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718551454] [2023-11-24 23:50:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:45,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718551454] [2023-11-24 23:50:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718551454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:45,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:45,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:45,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418825016] [2023-11-24 23:50:45,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:45,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:45,699 INFO L87 Difference]: Start difference. First operand 13072 states and 26337 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-11-24 23:50:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:46,560 INFO L93 Difference]: Finished difference Result 16628 states and 33592 transitions. [2023-11-24 23:50:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2023-11-24 23:50:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:46,609 INFO L225 Difference]: With dead ends: 16628 [2023-11-24 23:50:46,609 INFO L226 Difference]: Without dead ends: 16628 [2023-11-24 23:50:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:46,612 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 410 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:46,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1055 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:50:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16628 states. [2023-11-24 23:50:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16628 to 13503. [2023-11-24 23:50:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13427 states have (on average 2.0259924033663514) internal successors, (27203), 13502 states have internal predecessors, (27203), 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) [2023-11-24 23:50:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 27203 transitions. [2023-11-24 23:50:47,017 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 27203 transitions. Word has length 67 [2023-11-24 23:50:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 13503 states and 27203 transitions. [2023-11-24 23:50:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-11-24 23:50:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 27203 transitions. [2023-11-24 23:50:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:50:47,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:47,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:50:47,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 352884806, now seen corresponding path program 1 times [2023-11-24 23:50:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233660194] [2023-11-24 23:50:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:47,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:47,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233660194] [2023-11-24 23:50:47,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233660194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274332427] [2023-11-24 23:50:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:47,594 INFO L87 Difference]: Start difference. First operand 13503 states and 27203 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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) [2023-11-24 23:50:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:48,404 INFO L93 Difference]: Finished difference Result 15343 states and 30909 transitions. [2023-11-24 23:50:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:48,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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 83 [2023-11-24 23:50:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:48,454 INFO L225 Difference]: With dead ends: 15343 [2023-11-24 23:50:48,455 INFO L226 Difference]: Without dead ends: 15343 [2023-11-24 23:50:48,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:48,456 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 254 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:48,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 872 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:50:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15343 states. [2023-11-24 23:50:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15343 to 14029. [2023-11-24 23:50:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14029 states, 13961 states have (on average 2.024425184442375) internal successors, (28263), 14028 states have internal predecessors, (28263), 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) [2023-11-24 23:50:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14029 states to 14029 states and 28263 transitions. [2023-11-24 23:50:48,827 INFO L78 Accepts]: Start accepts. Automaton has 14029 states and 28263 transitions. Word has length 83 [2023-11-24 23:50:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 14029 states and 28263 transitions. [2023-11-24 23:50:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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) [2023-11-24 23:50:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14029 states and 28263 transitions. [2023-11-24 23:50:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:50:48,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:48,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:48,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:50:48,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:48,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -254640781, now seen corresponding path program 1 times [2023-11-24 23:50:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:48,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204972208] [2023-11-24 23:50:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:49,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:49,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204972208] [2023-11-24 23:50:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204972208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:49,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:49,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555658064] [2023-11-24 23:50:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:49,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:49,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:49,480 INFO L87 Difference]: Start difference. First operand 14029 states and 28263 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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) [2023-11-24 23:50:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:50,178 INFO L93 Difference]: Finished difference Result 14626 states and 29462 transitions. [2023-11-24 23:50:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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 83 [2023-11-24 23:50:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:50,225 INFO L225 Difference]: With dead ends: 14626 [2023-11-24 23:50:50,225 INFO L226 Difference]: Without dead ends: 14626 [2023-11-24 23:50:50,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:50,228 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 371 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:50,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 989 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:50:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14626 states. [2023-11-24 23:50:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 14490. [2023-11-24 23:50:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14490 states, 14422 states have (on average 2.023921786160033) internal successors, (29189), 14489 states have internal predecessors, (29189), 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) [2023-11-24 23:50:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14490 states to 14490 states and 29189 transitions. [2023-11-24 23:50:50,627 INFO L78 Accepts]: Start accepts. Automaton has 14490 states and 29189 transitions. Word has length 83 [2023-11-24 23:50:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:50,628 INFO L495 AbstractCegarLoop]: Abstraction has 14490 states and 29189 transitions. [2023-11-24 23:50:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 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) [2023-11-24 23:50:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14490 states and 29189 transitions. [2023-11-24 23:50:50,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-24 23:50:50,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:50,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:50,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:50:50,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:50,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1854717066, now seen corresponding path program 1 times [2023-11-24 23:50:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503728239] [2023-11-24 23:50:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:50,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:51,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503728239] [2023-11-24 23:50:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503728239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106559044] [2023-11-24 23:50:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:51,210 INFO L87 Difference]: Start difference. First operand 14490 states and 29189 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 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) [2023-11-24 23:50:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:52,077 INFO L93 Difference]: Finished difference Result 14904 states and 30023 transitions. [2023-11-24 23:50:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 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 89 [2023-11-24 23:50:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:52,123 INFO L225 Difference]: With dead ends: 14904 [2023-11-24 23:50:52,123 INFO L226 Difference]: Without dead ends: 14904 [2023-11-24 23:50:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:52,124 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 238 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 841 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:50:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14904 states. [2023-11-24 23:50:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14904 to 14752. [2023-11-24 23:50:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14752 states, 14688 states have (on average 2.023216230936819) internal successors, (29717), 14751 states have internal predecessors, (29717), 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) [2023-11-24 23:50:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14752 states to 14752 states and 29717 transitions. [2023-11-24 23:50:52,540 INFO L78 Accepts]: Start accepts. Automaton has 14752 states and 29717 transitions. Word has length 89 [2023-11-24 23:50:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:52,540 INFO L495 AbstractCegarLoop]: Abstraction has 14752 states and 29717 transitions. [2023-11-24 23:50:52,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 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) [2023-11-24 23:50:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 14752 states and 29717 transitions. [2023-11-24 23:50:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-24 23:50:52,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:52,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:52,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 23:50:52,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:50:52,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash -567015673, now seen corresponding path program 1 times [2023-11-24 23:50:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753078107] [2023-11-24 23:50:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:56,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753078107] [2023-11-24 23:50:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753078107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-11-24 23:50:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696093478] [2023-11-24 23:50:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-24 23:50:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-24 23:50:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:50:56,458 INFO L87 Difference]: Start difference. First operand 14752 states and 29717 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 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) [2023-11-24 23:51:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:08,625 INFO L93 Difference]: Finished difference Result 35509 states and 71518 transitions. [2023-11-24 23:51:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 23:51:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 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 96 [2023-11-24 23:51:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:08,706 INFO L225 Difference]: With dead ends: 35509 [2023-11-24 23:51:08,707 INFO L226 Difference]: Without dead ends: 35505 [2023-11-24 23:51:08,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=824, Invalid=2598, Unknown=0, NotChecked=0, Total=3422 [2023-11-24 23:51:08,709 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 4051 mSDsluCounter, 7418 mSDsCounter, 0 mSdLazyCounter, 6834 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 7996 SdHoareTripleChecker+Invalid, 7134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 6834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:08,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4051 Valid, 7996 Invalid, 7134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [300 Valid, 6834 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-24 23:51:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35505 states. [2023-11-24 23:51:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35505 to 17197. [2023-11-24 23:51:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17197 states, 17133 states have (on average 2.039456020545147) internal successors, (34942), 17196 states have internal predecessors, (34942), 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) [2023-11-24 23:51:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17197 states to 17197 states and 34942 transitions. [2023-11-24 23:51:09,216 INFO L78 Accepts]: Start accepts. Automaton has 17197 states and 34942 transitions. Word has length 96 [2023-11-24 23:51:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:09,217 INFO L495 AbstractCegarLoop]: Abstraction has 17197 states and 34942 transitions. [2023-11-24 23:51:09,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 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) [2023-11-24 23:51:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 17197 states and 34942 transitions. [2023-11-24 23:51:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-24 23:51:09,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:09,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:09,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 23:51:09,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-24 23:51:09,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1265992322, now seen corresponding path program 1 times [2023-11-24 23:51:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285860930] [2023-11-24 23:51:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:51:11,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285860930] [2023-11-24 23:51:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285860930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:11,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-24 23:51:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717563974] [2023-11-24 23:51:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-24 23:51:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-24 23:51:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:51:11,657 INFO L87 Difference]: Start difference. First operand 17197 states and 34942 transitions. Second operand has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 28 states have internal predecessors, (96), 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)