./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ --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 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:49:22,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:22,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-19 04:49:22,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:22,196 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:22,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:22,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:22,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:22,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:22,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:22,227 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:22,227 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:22,228 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:22,228 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:22,229 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:22,229 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:22,230 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:22,230 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:22,231 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:22,231 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:22,232 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:22,233 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:22,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:22,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:22,234 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:49:22,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:22,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:49:22,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:22,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:22,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:22,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:22,238 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 04:49:22,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:22,239 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:49:22,239 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:22,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:22,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:22,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:22,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:22,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:22,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:22,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:22,243 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:22,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:22,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:22,244 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:22,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:22,245 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_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 [2023-11-19 04:49:22,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:22,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:22,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:22,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:22,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:22,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2023-11-19 04:49:25,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:25,997 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:26,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2023-11-19 04:49:26,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/data/13e9b34a1/5eed4718683a483ea0e2cfd476499b61/FLAG92fb54682 [2023-11-19 04:49:26,034 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/data/13e9b34a1/5eed4718683a483ea0e2cfd476499b61 [2023-11-19 04:49:26,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:26,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:26,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:26,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:26,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:26,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711ab67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26, skipping insertion in model container [2023-11-19 04:49:26,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:49:26,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:26,523 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:49:26,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:26,644 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:49:26,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26 WrapperNode [2023-11-19 04:49:26,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:26,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:26,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:49:26,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:49:26,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,718 INFO L138 Inliner]: procedures = 164, calls = 20, calls flagged for inlining = 4, calls inlined = 5, statements flattened = 89 [2023-11-19 04:49:26,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:26,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:49:26,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:49:26,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:49:26,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:49:26,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:49:26,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:49:26,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:49:26,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (1/1) ... [2023-11-19 04:49:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:26,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:26,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:49:26,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_058dddac-cb34-4b24-bedd-4e594e94a0c9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:49:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 04:49:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 04:49:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:49:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:49:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:49:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:49:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:49:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:49:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:49:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:49:26,838 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:49:26,980 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:49:26,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:49:27,185 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:49:27,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:49:27,200 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:49:27,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:27 BoogieIcfgContainer [2023-11-19 04:49:27,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:49:27,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:49:27,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:49:27,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:49:27,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:26" (1/3) ... [2023-11-19 04:49:27,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ede8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:27, skipping insertion in model container [2023-11-19 04:49:27,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:26" (2/3) ... [2023-11-19 04:49:27,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ede8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:27, skipping insertion in model container [2023-11-19 04:49:27,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:27" (3/3) ... [2023-11-19 04:49:27,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2023-11-19 04:49:27,225 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:49:27,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:49:27,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:49:27,234 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:49:27,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:49:27,328 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:49:27,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 103 transitions, 210 flow [2023-11-19 04:49:27,347 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 103 transitions, 210 flow [2023-11-19 04:49:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 210 flow [2023-11-19 04:49:27,435 INFO L124 PetriNetUnfolderBase]: 8/155 cut-off events. [2023-11-19 04:49:27,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:49:27,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 155 events. 8/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-11-19 04:49:27,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 3300 [2023-11-19 04:49:29,915 INFO L134 LiptonReduction]: Checked pairs total: 11916 [2023-11-19 04:49:29,917 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-11-19 04:49:29,933 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 36 transitions, 76 flow [2023-11-19 04:49:29,969 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 281 states, 259 states have (on average 2.1776061776061777) internal successors, (564), 280 states have internal predecessors, (564), 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) [2023-11-19 04:49:29,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:29,996 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;@6125c499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:29,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 04:49:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 259 states have (on average 2.1776061776061777) internal successors, (564), 280 states have internal predecessors, (564), 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) [2023-11-19 04:49:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:49:30,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:30,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:49:30,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 04:49:30,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash 380102, now seen corresponding path program 1 times [2023-11-19 04:49:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482966431] [2023-11-19 04:49:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:30,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482966431] [2023-11-19 04:49:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482966431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:30,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141809635] [2023-11-19 04:49:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:30,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:49:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:49:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:30,219 INFO L87 Difference]: Start difference. First operand has 281 states, 259 states have (on average 2.1776061776061777) internal successors, (564), 280 states have internal predecessors, (564), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:30,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:30,267 INFO L93 Difference]: Finished difference Result 281 states and 514 transitions. [2023-11-19 04:49:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:49:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-19 04:49:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:30,283 INFO L225 Difference]: With dead ends: 281 [2023-11-19 04:49:30,283 INFO L226 Difference]: Without dead ends: 281 [2023-11-19 04:49:30,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:30,288 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:30,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-19 04:49:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-19 04:49:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 259 states have (on average 1.9845559845559846) internal successors, (514), 280 states have internal predecessors, (514), 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) [2023-11-19 04:49:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 514 transitions. [2023-11-19 04:49:30,349 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 514 transitions. Word has length 3 [2023-11-19 04:49:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:30,350 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 514 transitions. [2023-11-19 04:49:30,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 514 transitions. [2023-11-19 04:49:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:49:30,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:30,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:49:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:49:30,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 04:49:30,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash 365192287, now seen corresponding path program 1 times [2023-11-19 04:49:30,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936067291] [2023-11-19 04:49:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:30,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936067291] [2023-11-19 04:49:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936067291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:30,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393901183] [2023-11-19 04:49:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:30,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:30,468 INFO L87 Difference]: Start difference. First operand 281 states and 514 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:30,554 INFO L93 Difference]: Finished difference Result 289 states and 530 transitions. [2023-11-19 04:49:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 04:49:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:30,558 INFO L225 Difference]: With dead ends: 289 [2023-11-19 04:49:30,561 INFO L226 Difference]: Without dead ends: 289 [2023-11-19 04:49:30,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:30,563 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:30,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-19 04:49:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-19 04:49:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 268 states have (on average 1.9776119402985075) internal successors, (530), 288 states have internal predecessors, (530), 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) [2023-11-19 04:49:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 530 transitions. [2023-11-19 04:49:30,608 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 530 transitions. Word has length 5 [2023-11-19 04:49:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:30,609 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 530 transitions. [2023-11-19 04:49:30,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 530 transitions. [2023-11-19 04:49:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:49:30,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:30,611 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:49:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:49:30,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 04:49:30,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1573761713, now seen corresponding path program 1 times [2023-11-19 04:49:30,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207485439] [2023-11-19 04:49:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:49:30,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:49:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:49:30,702 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:49:30,702 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:49:30,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 04:49:30,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 04:49:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 04:49:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 04:49:30,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 04:49:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 04:49:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 04:49:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 04:49:30,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 04:49:30,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 04:49:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:49:30,710 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 04:49:30,712 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:49:30,713 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 04:49:30,734 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:49:30,738 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:49:30,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 278 flow [2023-11-19 04:49:30,739 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 278 flow [2023-11-19 04:49:30,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 278 flow [2023-11-19 04:49:30,789 INFO L124 PetriNetUnfolderBase]: 13/240 cut-off events. [2023-11-19 04:49:30,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:49:30,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 240 events. 13/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 776 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 156. Up to 6 conditions per place. [2023-11-19 04:49:30,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 8460 [2023-11-19 04:49:33,479 INFO L134 LiptonReduction]: Checked pairs total: 36710 [2023-11-19 04:49:33,479 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-11-19 04:49:33,482 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 116 flow [2023-11-19 04:49:33,741 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4548 states, 4451 states have (on average 3.0566164906762525) internal successors, (13605), 4547 states have internal predecessors, (13605), 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) [2023-11-19 04:49:33,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:33,753 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;@6125c499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:33,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 04:49:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 4548 states, 4451 states have (on average 3.0566164906762525) internal successors, (13605), 4547 states have internal predecessors, (13605), 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) [2023-11-19 04:49:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:49:33,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:33,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:49:33,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:33,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 661999, now seen corresponding path program 1 times [2023-11-19 04:49:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:33,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330168012] [2023-11-19 04:49:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:33,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:33,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330168012] [2023-11-19 04:49:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330168012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:33,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684862851] [2023-11-19 04:49:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:49:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:49:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:33,874 INFO L87 Difference]: Start difference. First operand has 4548 states, 4451 states have (on average 3.0566164906762525) internal successors, (13605), 4547 states have internal predecessors, (13605), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:33,982 INFO L93 Difference]: Finished difference Result 4548 states and 12535 transitions. [2023-11-19 04:49:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:49:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-19 04:49:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:34,027 INFO L225 Difference]: With dead ends: 4548 [2023-11-19 04:49:34,027 INFO L226 Difference]: Without dead ends: 4548 [2023-11-19 04:49:34,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:34,029 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:34,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:49:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2023-11-19 04:49:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4548. [2023-11-19 04:49:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4451 states have (on average 2.816221073915974) internal successors, (12535), 4547 states have internal predecessors, (12535), 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) [2023-11-19 04:49:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 12535 transitions. [2023-11-19 04:49:34,225 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 12535 transitions. Word has length 3 [2023-11-19 04:49:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:34,225 INFO L495 AbstractCegarLoop]: Abstraction has 4548 states and 12535 transitions. [2023-11-19 04:49:34,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 12535 transitions. [2023-11-19 04:49:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:49:34,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:34,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:49:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:49:34,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:34,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 636103626, now seen corresponding path program 1 times [2023-11-19 04:49:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477218503] [2023-11-19 04:49:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:34,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477218503] [2023-11-19 04:49:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477218503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:34,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:34,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196691121] [2023-11-19 04:49:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:34,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:34,264 INFO L87 Difference]: Start difference. First operand 4548 states and 12535 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:34,398 INFO L93 Difference]: Finished difference Result 4763 states and 13142 transitions. [2023-11-19 04:49:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:34,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 04:49:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:34,445 INFO L225 Difference]: With dead ends: 4763 [2023-11-19 04:49:34,446 INFO L226 Difference]: Without dead ends: 4763 [2023-11-19 04:49:34,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:34,447 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:34,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 46 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2023-11-19 04:49:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4763. [2023-11-19 04:49:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4667 states have (on average 2.8159417184486824) internal successors, (13142), 4762 states have internal predecessors, (13142), 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) [2023-11-19 04:49:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 13142 transitions. [2023-11-19 04:49:34,780 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 13142 transitions. Word has length 5 [2023-11-19 04:49:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:34,781 INFO L495 AbstractCegarLoop]: Abstraction has 4763 states and 13142 transitions. [2023-11-19 04:49:34,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 13142 transitions. [2023-11-19 04:49:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:49:34,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:34,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:34,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:49:34,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:34,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1020259998, now seen corresponding path program 1 times [2023-11-19 04:49:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:34,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825729158] [2023-11-19 04:49:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:34,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825729158] [2023-11-19 04:49:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825729158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750039749] [2023-11-19 04:49:34,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:34,874 INFO L87 Difference]: Start difference. First operand 4763 states and 13142 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:49:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:35,038 INFO L93 Difference]: Finished difference Result 5280 states and 14608 transitions. [2023-11-19 04:49:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:49:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:35,098 INFO L225 Difference]: With dead ends: 5280 [2023-11-19 04:49:35,098 INFO L226 Difference]: Without dead ends: 5280 [2023-11-19 04:49:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:35,100 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 28 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:35,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 48 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2023-11-19 04:49:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4996. [2023-11-19 04:49:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4901 states have (on average 2.81636400734544) internal successors, (13803), 4995 states have internal predecessors, (13803), 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) [2023-11-19 04:49:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 13803 transitions. [2023-11-19 04:49:35,369 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 13803 transitions. Word has length 7 [2023-11-19 04:49:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:35,369 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 13803 transitions. [2023-11-19 04:49:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:49:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 13803 transitions. [2023-11-19 04:49:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:49:35,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:35,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:49:35,371 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1410387397, now seen corresponding path program 1 times [2023-11-19 04:49:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229603178] [2023-11-19 04:49:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:35,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229603178] [2023-11-19 04:49:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229603178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515181715] [2023-11-19 04:49:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:35,423 INFO L87 Difference]: Start difference. First operand 4996 states and 13803 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:49:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:35,586 INFO L93 Difference]: Finished difference Result 6676 states and 18084 transitions. [2023-11-19 04:49:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:49:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:35,635 INFO L225 Difference]: With dead ends: 6676 [2023-11-19 04:49:35,636 INFO L226 Difference]: Without dead ends: 6676 [2023-11-19 04:49:35,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:35,637 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:35,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2023-11-19 04:49:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 5344. [2023-11-19 04:49:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5259 states have (on average 2.75812892184826) internal successors, (14505), 5343 states have internal predecessors, (14505), 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) [2023-11-19 04:49:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 14505 transitions. [2023-11-19 04:49:35,971 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 14505 transitions. Word has length 7 [2023-11-19 04:49:35,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:35,972 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 14505 transitions. [2023-11-19 04:49:35,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:49:35,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 14505 transitions. [2023-11-19 04:49:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:49:35,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:35,976 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:49:35,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:35,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1918613830, now seen corresponding path program 1 times [2023-11-19 04:49:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:35,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855516394] [2023-11-19 04:49:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:36,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855516394] [2023-11-19 04:49:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855516394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:36,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:36,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460287533] [2023-11-19 04:49:36,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:36,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:36,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:36,049 INFO L87 Difference]: Start difference. First operand 5344 states and 14505 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 04:49:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:36,226 INFO L93 Difference]: Finished difference Result 5469 states and 14834 transitions. [2023-11-19 04:49:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2023-11-19 04:49:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:36,256 INFO L225 Difference]: With dead ends: 5469 [2023-11-19 04:49:36,257 INFO L226 Difference]: Without dead ends: 5469 [2023-11-19 04:49:36,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:36,258 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2023-11-19 04:49:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 5469. [2023-11-19 04:49:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5390 states have (on average 2.752133580705009) internal successors, (14834), 5468 states have internal predecessors, (14834), 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) [2023-11-19 04:49:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 14834 transitions. [2023-11-19 04:49:36,597 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 14834 transitions. Word has length 11 [2023-11-19 04:49:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:36,598 INFO L495 AbstractCegarLoop]: Abstraction has 5469 states and 14834 transitions. [2023-11-19 04:49:36,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 04:49:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 14834 transitions. [2023-11-19 04:49:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:49:36,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:36,600 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 04:49:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:49:36,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:49:36,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1923487379, now seen corresponding path program 1 times [2023-11-19 04:49:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:36,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341006144] [2023-11-19 04:49:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:49:36,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:49:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:49:36,646 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:49:36,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:49:36,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 04:49:36,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-19 04:49:36,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-19 04:49:36,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-19 04:49:36,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-19 04:49:36,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-19 04:49:36,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-19 04:49:36,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-19 04:49:36,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-19 04:49:36,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-19 04:49:36,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-19 04:49:36,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-19 04:49:36,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-19 04:49:36,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:49:36,654 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 04:49:36,655 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:49:36,655 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 04:49:36,684 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:49:36,688 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:49:36,688 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 165 transitions, 348 flow [2023-11-19 04:49:36,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 165 transitions, 348 flow [2023-11-19 04:49:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 348 flow [2023-11-19 04:49:36,744 INFO L124 PetriNetUnfolderBase]: 18/325 cut-off events. [2023-11-19 04:49:36,744 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 04:49:36,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 325 events. 18/325 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1184 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 244. Up to 8 conditions per place. [2023-11-19 04:49:36,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 15480 [2023-11-19 04:49:40,061 INFO L134 LiptonReduction]: Checked pairs total: 71225 [2023-11-19 04:49:40,061 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-11-19 04:49:40,063 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 69 transitions, 156 flow [2023-11-19 04:49:42,693 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68432 states, 68032 states have (on average 4.012317732831609) internal successors, (272966), 68431 states have internal predecessors, (272966), 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) [2023-11-19 04:49:42,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:42,705 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;@6125c499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:42,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 04:49:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 68432 states, 68032 states have (on average 4.012317732831609) internal successors, (272966), 68431 states have internal predecessors, (272966), 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) [2023-11-19 04:49:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:49:42,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:42,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:49:42,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 04:49:42,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1014521, now seen corresponding path program 1 times [2023-11-19 04:49:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:42,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133021566] [2023-11-19 04:49:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:42,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133021566] [2023-11-19 04:49:42,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133021566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:42,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134064029] [2023-11-19 04:49:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:49:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:49:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:42,945 INFO L87 Difference]: Start difference. First operand has 68432 states, 68032 states have (on average 4.012317732831609) internal successors, (272966), 68431 states have internal predecessors, (272966), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:44,552 INFO L93 Difference]: Finished difference Result 68432 states and 252351 transitions. [2023-11-19 04:49:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:49:44,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-19 04:49:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:45,610 INFO L225 Difference]: With dead ends: 68432 [2023-11-19 04:49:45,610 INFO L226 Difference]: Without dead ends: 68432 [2023-11-19 04:49:45,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:49:45,613 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:45,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68432 states. [2023-11-19 04:49:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68432 to 68432. [2023-11-19 04:49:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68432 states, 68032 states have (on average 3.709298565380997) internal successors, (252351), 68431 states have internal predecessors, (252351), 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) [2023-11-19 04:49:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68432 states to 68432 states and 252351 transitions. [2023-11-19 04:49:49,816 INFO L78 Accepts]: Start accepts. Automaton has 68432 states and 252351 transitions. Word has length 3 [2023-11-19 04:49:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:49,816 INFO L495 AbstractCegarLoop]: Abstraction has 68432 states and 252351 transitions. [2023-11-19 04:49:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:49:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 68432 states and 252351 transitions. [2023-11-19 04:49:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:49:49,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:49,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:49:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:49:49,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 04:49:49,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash 974738905, now seen corresponding path program 1 times [2023-11-19 04:49:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919644063] [2023-11-19 04:49:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:49,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:49,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:49,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919644063] [2023-11-19 04:49:49,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919644063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:49,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:49,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:49,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372568058] [2023-11-19 04:49:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:49,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:49,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:49,877 INFO L87 Difference]: Start difference. First operand 68432 states and 252351 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:50,495 INFO L93 Difference]: Finished difference Result 71968 states and 265567 transitions. [2023-11-19 04:49:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-19 04:49:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:51,579 INFO L225 Difference]: With dead ends: 71968 [2023-11-19 04:49:51,579 INFO L226 Difference]: Without dead ends: 71968 [2023-11-19 04:49:51,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:51,581 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:51,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 56 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71968 states. [2023-11-19 04:49:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71968 to 71968. [2023-11-19 04:49:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71968 states, 71569 states have (on average 3.7106428761055765) internal successors, (265567), 71967 states have internal predecessors, (265567), 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) [2023-11-19 04:49:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71968 states to 71968 states and 265567 transitions. [2023-11-19 04:49:54,976 INFO L78 Accepts]: Start accepts. Automaton has 71968 states and 265567 transitions. Word has length 5 [2023-11-19 04:49:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:54,976 INFO L495 AbstractCegarLoop]: Abstraction has 71968 states and 265567 transitions. [2023-11-19 04:49:54,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:49:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 71968 states and 265567 transitions. [2023-11-19 04:49:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:49:54,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:54,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:54,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:49:54,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 04:49:54,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:54,979 INFO L85 PathProgramCache]: Analyzing trace with hash 30093830, now seen corresponding path program 1 times [2023-11-19 04:49:54,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:54,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079565258] [2023-11-19 04:49:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:55,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079565258] [2023-11-19 04:49:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079565258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:55,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:55,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472578995] [2023-11-19 04:49:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:55,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:55,022 INFO L87 Difference]: Start difference. First operand 71968 states and 265567 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:49:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:56,375 INFO L93 Difference]: Finished difference Result 76305 states and 281868 transitions. [2023-11-19 04:49:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:56,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:49:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:56,913 INFO L225 Difference]: With dead ends: 76305 [2023-11-19 04:49:56,914 INFO L226 Difference]: Without dead ends: 76305 [2023-11-19 04:49:56,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:56,914 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 39 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:56,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 59 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76305 states. [2023-11-19 04:49:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76305 to 76305. [2023-11-19 04:49:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76305 states, 75907 states have (on average 3.7133334211601037) internal successors, (281868), 76304 states have internal predecessors, (281868), 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) [2023-11-19 04:50:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76305 states to 76305 states and 281868 transitions. [2023-11-19 04:50:00,144 INFO L78 Accepts]: Start accepts. Automaton has 76305 states and 281868 transitions. Word has length 7 [2023-11-19 04:50:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:00,144 INFO L495 AbstractCegarLoop]: Abstraction has 76305 states and 281868 transitions. [2023-11-19 04:50:00,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:50:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 76305 states and 281868 transitions. [2023-11-19 04:50:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:50:00,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:00,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:50:00,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 04:50:00,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 421416372, now seen corresponding path program 1 times [2023-11-19 04:50:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893662167] [2023-11-19 04:50:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:50:00,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:00,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893662167] [2023-11-19 04:50:00,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893662167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:00,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:00,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137890957] [2023-11-19 04:50:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:00,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:00,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:00,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:00,173 INFO L87 Difference]: Start difference. First operand 76305 states and 281868 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:50:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:02,033 INFO L93 Difference]: Finished difference Result 117166 states and 423105 transitions. [2023-11-19 04:50:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:02,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:50:02,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:02,688 INFO L225 Difference]: With dead ends: 117166 [2023-11-19 04:50:02,689 INFO L226 Difference]: Without dead ends: 117166 [2023-11-19 04:50:02,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:02,689 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 46 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:02,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 51 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:50:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117166 states. [2023-11-19 04:50:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117166 to 88093. [2023-11-19 04:50:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88093 states, 87709 states have (on average 3.65469906166984) internal successors, (320550), 88092 states have internal predecessors, (320550), 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) [2023-11-19 04:50:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88093 states to 88093 states and 320550 transitions. [2023-11-19 04:50:06,803 INFO L78 Accepts]: Start accepts. Automaton has 88093 states and 320550 transitions. Word has length 7 [2023-11-19 04:50:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:06,803 INFO L495 AbstractCegarLoop]: Abstraction has 88093 states and 320550 transitions. [2023-11-19 04:50:06,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:50:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 88093 states and 320550 transitions. [2023-11-19 04:50:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:50:06,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:06,805 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:50:06,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 04:50:06,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:06,806 INFO L85 PathProgramCache]: Analyzing trace with hash 993075697, now seen corresponding path program 1 times [2023-11-19 04:50:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659812399] [2023-11-19 04:50:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:50:06,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659812399] [2023-11-19 04:50:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659812399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:06,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:06,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271873007] [2023-11-19 04:50:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:06,839 INFO L87 Difference]: Start difference. First operand 88093 states and 320550 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 04:50:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:08,572 INFO L93 Difference]: Finished difference Result 91668 states and 333557 transitions. [2023-11-19 04:50:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:08,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2023-11-19 04:50:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted.