./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:08:46,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:08:46,224 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2023-11-24 22:08:46,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:08:46,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:08:46,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:08:46,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:08:46,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:08:46,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:08:46,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:08:46,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:08:46,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:08:46,259 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:08:46,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:08:46,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:08:46,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:08:46,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:08:46,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:08:46,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:08:46,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:08:46,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:08:46,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:08:46,265 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-24 22:08:46,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:08:46,266 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:08:46,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:08:46,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:08:46,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:08:46,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:08:46,268 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-24 22:08:46,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:08:46,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:08:46,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:08:46,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:08:46,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:08:46,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:08:46,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:08:46,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:08:46,271 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-24 22:08:46,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:08:46,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:08:46,272 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:08:46,273 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:08:46,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f [2023-11-24 22:08:46,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:08:46,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:08:46,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:08:46,567 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:08:46,567 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:08:46,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-24 22:08:49,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:08:50,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:08:50,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2023-11-24 22:08:50,096 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/data/79c5033df/353120f2b3bd4211b0f3d483decfd6a2/FLAG77d5fa26a [2023-11-24 22:08:50,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/data/79c5033df/353120f2b3bd4211b0f3d483decfd6a2 [2023-11-24 22:08:50,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:08:50,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:08:50,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:08:50,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:08:50,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:08:50,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:50,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b74a583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50, skipping insertion in model container [2023-11-24 22:08:50,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:50,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:08:50,791 WARN L638 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-24 22:08:50,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:08:50,822 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:08:50,891 WARN L638 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2023-11-24 22:08:50,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:08:50,972 WARN L675 CHandler]: The function __sync_fetch_and_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:08:50,981 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:08:50,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50 WrapperNode [2023-11-24 22:08:50,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:08:50,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:08:50,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:08:50,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:08:50,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,044 INFO L138 Inliner]: procedures = 268, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-11-24 22:08:51,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:08:51,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:08:51,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:08:51,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:08:51,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:08:51,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:08:51,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:08:51,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:08:51,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (1/1) ... [2023-11-24 22:08:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:08:51,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:51,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:08:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:08:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 22:08:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:08:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 22:08:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:08:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:08:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:08:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:08:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure __sync_fetch_and_add [2023-11-24 22:08:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:08:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-24 22:08:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-24 22:08:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:08:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:08:51,196 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:08:51,453 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:08:51,455 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:08:51,693 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:08:51,705 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:08:51,705 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:08:51,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:08:51 BoogieIcfgContainer [2023-11-24 22:08:51,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:08:51,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:08:51,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:08:51,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:08:51,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:08:50" (1/3) ... [2023-11-24 22:08:51,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7706b8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:08:51, skipping insertion in model container [2023-11-24 22:08:51,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:50" (2/3) ... [2023-11-24 22:08:51,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7706b8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:08:51, skipping insertion in model container [2023-11-24 22:08:51,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:08:51" (3/3) ... [2023-11-24 22:08:51,719 INFO L112 eAbstractionObserver]: Analyzing ICFG atomic-gcc.i [2023-11-24 22:08:51,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:08:51,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:08:51,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-24 22:08:51,739 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:08:51,818 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-24 22:08:51,873 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:51,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:51,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:51,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:08:51,925 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:51,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:51,946 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:51,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:52,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:52,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1628911212, now seen corresponding path program 1 times [2023-11-24 22:08:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378330501] [2023-11-24 22:08:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378330501] [2023-11-24 22:08:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378330501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277539694] [2023-11-24 22:08:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:52,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:52,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:52,342 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:52,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:52,343 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:08:52,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:52,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1154351444, now seen corresponding path program 1 times [2023-11-24 22:08:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036840310] [2023-11-24 22:08:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036840310] [2023-11-24 22:08:53,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036840310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:53,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:53,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298073016] [2023-11-24 22:08:53,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:53,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:53,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,197 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:53,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:53,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:08:53,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:53,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1850970056, now seen corresponding path program 1 times [2023-11-24 22:08:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:53,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147386969] [2023-11-24 22:08:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:53,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:53,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:53,604 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:53,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:53,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:08:53,632 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:53,634 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:53,634 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-24 22:08:53,660 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:08:53,668 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:53,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:53,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:53,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:53,708 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:53,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:53,709 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:53,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:53,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2023-11-24 22:08:53,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:53,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1067108460, now seen corresponding path program 1 times [2023-11-24 22:08:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533798569] [2023-11-24 22:08:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533798569] [2023-11-24 22:08:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533798569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:53,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:53,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919652754] [2023-11-24 22:08:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:53,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,793 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:53,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:53,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:08:53,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:53,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:53,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1311021451, now seen corresponding path program 1 times [2023-11-24 22:08:53,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:53,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152655049] [2023-11-24 22:08:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:54,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:54,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152655049] [2023-11-24 22:08:54,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152655049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:54,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:54,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759681592] [2023-11-24 22:08:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,209 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:54,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:54,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:54,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:08:54,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:54,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1114016511, now seen corresponding path program 1 times [2023-11-24 22:08:54,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:54,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090612351] [2023-11-24 22:08:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:54,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:54,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:54,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:54,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:54,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:54,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:54,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:54,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:54,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:08:54,567 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:54,567 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:54,567 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-24 22:08:54,597 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 22:08:54,608 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:54,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:54,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:54,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:54,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-11-24 22:08:54,621 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:54,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:54,622 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:54,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:54,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1553712236, now seen corresponding path program 1 times [2023-11-24 22:08:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942314261] [2023-11-24 22:08:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942314261] [2023-11-24 22:08:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942314261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:54,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:54,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451146084] [2023-11-24 22:08:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:54,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,697 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:54,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:54,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:08:54,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:54,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1156777229, now seen corresponding path program 1 times [2023-11-24 22:08:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872499857] [2023-11-24 22:08:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:54,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872499857] [2023-11-24 22:08:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872499857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:54,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:54,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:54,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314559837] [2023-11-24 22:08:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:54,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,992 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:54,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:54,992 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:55,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:08:55,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:55,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1630608727, now seen corresponding path program 1 times [2023-11-24 22:08:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:55,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524755402] [2023-11-24 22:08:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:55,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:55,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:55,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:55,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:55,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:55,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:55,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:55,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:55,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:55,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:08:55,341 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:55,342 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:55,342 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-24 22:08:55,364 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 22:08:55,367 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:55,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:55,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:55,374 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:55,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:55,375 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:55,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:55,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2023-11-24 22:08:55,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:55,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 589357164, now seen corresponding path program 1 times [2023-11-24 22:08:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465072144] [2023-11-24 22:08:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:55,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465072144] [2023-11-24 22:08:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465072144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:55,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:55,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973704616] [2023-11-24 22:08:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,427 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:55,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:55,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:08:55,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:55,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -356601471, now seen corresponding path program 1 times [2023-11-24 22:08:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:55,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50456626] [2023-11-24 22:08:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:55,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:55,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50456626] [2023-11-24 22:08:55,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50456626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:55,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:55,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:55,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471691780] [2023-11-24 22:08:55,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:55,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:55,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:55,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:55,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,681 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:55,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,682 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:55,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:08:55,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:55,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash 470487416, now seen corresponding path program 1 times [2023-11-24 22:08:55,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:55,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568606340] [2023-11-24 22:08:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:55,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:56,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:56,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:56,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:56,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:56,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:56,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:56,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:56,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:08:56,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:56,067 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:56,067 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-24 22:08:56,098 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-24 22:08:56,102 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:56,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:56,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:56,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2023-11-24 22:08:56,117 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:56,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:56,120 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:56,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:56,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1825956756, now seen corresponding path program 1 times [2023-11-24 22:08:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095329668] [2023-11-24 22:08:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095329668] [2023-11-24 22:08:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095329668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21315055] [2023-11-24 22:08:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,178 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:56,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:56,178 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:08:56,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:56,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1089505823, now seen corresponding path program 1 times [2023-11-24 22:08:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338801684] [2023-11-24 22:08:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338801684] [2023-11-24 22:08:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338801684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346507241] [2023-11-24 22:08:56,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:56,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,458 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:56,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:56,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:56,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:08:56,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:56,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash 71885846, now seen corresponding path program 1 times [2023-11-24 22:08:56,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:56,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130128668] [2023-11-24 22:08:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:56,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:56,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:56,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:56,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:56,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:56,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:56,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:56,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 22:08:56,874 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:56,875 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:56,875 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-24 22:08:56,910 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-24 22:08:56,912 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:56,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:56,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:56,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:56,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2023-11-24 22:08:56,928 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:56,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:56,929 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:56,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:56,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:56,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1397262228, now seen corresponding path program 1 times [2023-11-24 22:08:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783541098] [2023-11-24 22:08:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783541098] [2023-11-24 22:08:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783541098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:56,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310382570] [2023-11-24 22:08:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,984 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:56,984 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 22:08:56,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:56,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1113422643, now seen corresponding path program 1 times [2023-11-24 22:08:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848046013] [2023-11-24 22:08:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848046013] [2023-11-24 22:08:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848046013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725610564] [2023-11-24 22:08:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,258 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:57,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:57,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 22:08:57,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:57,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash -280372177, now seen corresponding path program 1 times [2023-11-24 22:08:57,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:57,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890044596] [2023-11-24 22:08:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:57,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:57,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:57,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:57,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:57,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:57,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:57,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:57,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:57,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:57,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 22:08:57,688 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:57,689 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:57,689 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-24 22:08:57,719 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-24 22:08:57,722 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:57,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:57,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:57,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-11-24 22:08:57,740 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:57,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:57,741 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:57,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:57,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:57,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1875440748, now seen corresponding path program 1 times [2023-11-24 22:08:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903072768] [2023-11-24 22:08:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:57,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903072768] [2023-11-24 22:08:57,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903072768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402250773] [2023-11-24 22:08:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:57,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:57,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,804 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:57,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:57,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 22:08:57,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:57,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1624547723, now seen corresponding path program 1 times [2023-11-24 22:08:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:57,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519930102] [2023-11-24 22:08:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519930102] [2023-11-24 22:08:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519930102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083744111] [2023-11-24 22:08:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,052 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:58,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:58,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 22:08:58,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:58,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -553653035, now seen corresponding path program 1 times [2023-11-24 22:08:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261927998] [2023-11-24 22:08:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:58,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:58,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:58,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:58,548 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:58,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:58,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:58,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:58,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:58,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:58,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 22:08:58,553 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:58,553 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:58,553 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-11-24 22:08:58,594 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-24 22:08:58,598 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:58,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:58,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:58,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:58,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2023-11-24 22:08:58,617 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:58,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:58,618 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:58,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:58,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:58,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash -597782420, now seen corresponding path program 1 times [2023-11-24 22:08:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:58,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50958879] [2023-11-24 22:08:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:58,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50958879] [2023-11-24 22:08:58,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50958879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:58,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630468697] [2023-11-24 22:08:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:58,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,671 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:58,672 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 22:08:58,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:58,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:58,675 INFO L85 PathProgramCache]: Analyzing trace with hash 713482329, now seen corresponding path program 1 times [2023-11-24 22:08:58,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:58,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693040447] [2023-11-24 22:08:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693040447] [2023-11-24 22:08:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693040447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777022627] [2023-11-24 22:08:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,901 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:58,901 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,901 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:08:59,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-24 22:08:59,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:59,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash 54033702, now seen corresponding path program 1 times [2023-11-24 22:08:59,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:59,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318859784] [2023-11-24 22:08:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:59,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:08:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:08:59,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:08:59,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:08:59,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:08:59,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:08:59,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:08:59,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:08:59,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:08:59,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-24 22:08:59,446 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:08:59,447 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:08:59,447 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-11-24 22:08:59,485 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-24 22:08:59,488 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:59,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:59,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2023-11-24 22:08:59,507 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:59,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:59,508 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:59,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:08:59,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -226997140, now seen corresponding path program 1 times [2023-11-24 22:08:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162395034] [2023-11-24 22:08:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:59,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:59,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162395034] [2023-11-24 22:08:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162395034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:59,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269558106] [2023-11-24 22:08:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:59,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:08:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:08:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:08:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,560 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:59,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-24 22:08:59,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:08:59,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 448348471, now seen corresponding path program 1 times [2023-11-24 22:08:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19701352] [2023-11-24 22:08:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19701352] [2023-11-24 22:08:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19701352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:59,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:59,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309724656] [2023-11-24 22:08:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,804 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:59,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:59,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:59,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:00,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-24 22:09:00,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:00,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 657297300, now seen corresponding path program 1 times [2023-11-24 22:09:00,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356985078] [2023-11-24 22:09:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:00,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:00,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:00,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:00,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:00,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:00,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:00,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:00,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-24 22:09:00,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:00,366 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:00,366 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-11-24 22:09:00,421 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-11-24 22:09:00,424 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:00,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:00,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:00,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2023-11-24 22:09:00,443 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:00,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:00,444 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:00,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:00,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:00,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1307170708, now seen corresponding path program 1 times [2023-11-24 22:09:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786205607] [2023-11-24 22:09:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786205607] [2023-11-24 22:09:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786205607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:00,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966857007] [2023-11-24 22:09:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,494 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:00,495 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-24 22:09:00,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:00,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 829146149, now seen corresponding path program 1 times [2023-11-24 22:09:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228773262] [2023-11-24 22:09:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:00,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:00,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228773262] [2023-11-24 22:09:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228773262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:00,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:00,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689871420] [2023-11-24 22:09:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:00,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:00,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,755 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:00,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:00,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:01,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-24 22:09:01,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:01,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:01,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1979343779, now seen corresponding path program 1 times [2023-11-24 22:09:01,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:01,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691912461] [2023-11-24 22:09:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:01,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:01,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:01,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:01,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:01,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:01,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:01,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:01,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:01,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-24 22:09:01,357 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:01,358 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:01,358 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-11-24 22:09:01,395 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-11-24 22:09:01,398 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:01,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:01,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:01,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2023-11-24 22:09:01,422 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:01,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:01,424 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:01,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:01,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:01,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 456664172, now seen corresponding path program 1 times [2023-11-24 22:09:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464704158] [2023-11-24 22:09:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:01,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:01,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464704158] [2023-11-24 22:09:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464704158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:01,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954172836] [2023-11-24 22:09:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,474 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:01,474 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-24 22:09:01,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:01,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1855875363, now seen corresponding path program 1 times [2023-11-24 22:09:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240565135] [2023-11-24 22:09:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:01,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240565135] [2023-11-24 22:09:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240565135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:01,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178388713] [2023-11-24 22:09:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:01,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,711 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:01,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:01,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-24 22:09:02,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:02,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1557996627, now seen corresponding path program 1 times [2023-11-24 22:09:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:02,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131978331] [2023-11-24 22:09:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:02,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:02,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:02,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:02,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:02,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:02,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:02,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:02,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:02,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-24 22:09:02,468 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:02,468 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:02,469 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-11-24 22:09:02,542 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-24 22:09:02,546 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:02,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:02,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2023-11-24 22:09:02,593 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:02,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:02,595 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:02,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:02,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash 769540204, now seen corresponding path program 1 times [2023-11-24 22:09:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037594902] [2023-11-24 22:09:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:02,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:02,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037594902] [2023-11-24 22:09:02,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037594902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:02,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:02,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:02,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145315436] [2023-11-24 22:09:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:02,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,656 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:02,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-24 22:09:02,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:02,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash -766431183, now seen corresponding path program 1 times [2023-11-24 22:09:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:02,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42130041] [2023-11-24 22:09:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:02,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42130041] [2023-11-24 22:09:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42130041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:02,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:02,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157401361] [2023-11-24 22:09:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,909 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:02,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:02,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:03,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-24 22:09:03,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:03,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 858513876, now seen corresponding path program 1 times [2023-11-24 22:09:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:03,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317142752] [2023-11-24 22:09:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:03,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:03,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:03,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:03,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:03,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:03,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:03,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:03,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:03,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-24 22:09:03,747 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:03,747 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:03,748 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-11-24 22:09:03,791 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-11-24 22:09:03,795 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:03,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:03,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:03,809 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:03,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:03,810 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:03,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:03,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2023-11-24 22:09:03,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -368542612, now seen corresponding path program 1 times [2023-11-24 22:09:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736738910] [2023-11-24 22:09:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736738910] [2023-11-24 22:09:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736738910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:03,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:03,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581820938] [2023-11-24 22:09:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:03,862 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:03,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:03,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-24 22:09:03,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:03,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1552161103, now seen corresponding path program 1 times [2023-11-24 22:09:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977959757] [2023-11-24 22:09:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977959757] [2023-11-24 22:09:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977959757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981611971] [2023-11-24 22:09:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:04,056 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:04,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:04,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:04,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-24 22:09:04,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:04,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:04,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1129186066, now seen corresponding path program 1 times [2023-11-24 22:09:04,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:04,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561861236] [2023-11-24 22:09:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:04,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:04,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:05,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:05,093 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:05,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:05,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:05,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:05,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:05,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-24 22:09:05,097 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:05,097 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:05,097 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-11-24 22:09:05,142 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-11-24 22:09:05,146 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:05,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:05,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:05,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:05,166 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:05,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:05,166 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:05,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:05,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2023-11-24 22:09:05,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:05,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1337383020, now seen corresponding path program 1 times [2023-11-24 22:09:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:05,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440143281] [2023-11-24 22:09:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440143281] [2023-11-24 22:09:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440143281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139613286] [2023-11-24 22:09:05,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:05,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,212 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:05,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:05,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-24 22:09:05,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:05,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash 221717629, now seen corresponding path program 1 times [2023-11-24 22:09:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:05,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676470478] [2023-11-24 22:09:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:05,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:05,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676470478] [2023-11-24 22:09:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676470478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:05,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:05,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:05,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959935459] [2023-11-24 22:09:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:05,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:05,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:05,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,444 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:05,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-24 22:09:06,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash 577893771, now seen corresponding path program 1 times [2023-11-24 22:09:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:06,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954152577] [2023-11-24 22:09:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:06,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:06,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:06,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:06,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:06,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:06,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:06,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-24 22:09:06,720 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:06,721 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:06,721 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-11-24 22:09:06,777 INFO L144 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2023-11-24 22:09:06,781 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:06,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:06,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:06,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:06,803 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:06,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:06,804 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:06,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:06,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2023-11-24 22:09:06,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:06,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1592349804, now seen corresponding path program 1 times [2023-11-24 22:09:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689542256] [2023-11-24 22:09:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689542256] [2023-11-24 22:09:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689542256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:06,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734477502] [2023-11-24 22:09:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:06,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,864 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:06,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:06,865 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-24 22:09:06,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:06,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -462794309, now seen corresponding path program 1 times [2023-11-24 22:09:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:06,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474452270] [2023-11-24 22:09:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:07,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474452270] [2023-11-24 22:09:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474452270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:07,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:07,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:07,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549266128] [2023-11-24 22:09:07,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:07,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:07,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:07,126 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:07,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:07,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:07,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:08,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-24 22:09:08,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:08,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -101481519, now seen corresponding path program 1 times [2023-11-24 22:09:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:08,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10848433] [2023-11-24 22:09:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:08,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:08,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:08,614 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:08,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:08,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:08,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:08,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:08,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:08,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-24 22:09:08,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:08,621 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:08,621 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-11-24 22:09:08,670 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-11-24 22:09:08,674 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:08,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:08,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:08,690 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:08,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:08,691 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:08,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:08,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2023-11-24 22:09:08,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:08,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash 396357740, now seen corresponding path program 1 times [2023-11-24 22:09:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690707530] [2023-11-24 22:09:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:08,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690707530] [2023-11-24 22:09:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690707530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:08,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:08,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:08,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258976691] [2023-11-24 22:09:08,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:08,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:08,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,745 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:08,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:08,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-24 22:09:08,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:08,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash -501374711, now seen corresponding path program 1 times [2023-11-24 22:09:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:08,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276613064] [2023-11-24 22:09:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:08,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:08,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276613064] [2023-11-24 22:09:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276613064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:08,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101443459] [2023-11-24 22:09:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:08,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,935 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:08,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:08,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:08,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:09,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-24 22:09:09,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:10,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash -957710462, now seen corresponding path program 1 times [2023-11-24 22:09:10,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:10,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450073523] [2023-11-24 22:09:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:10,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:10,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:10,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:10,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:10,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:10,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:10,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:10,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-24 22:09:10,323 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:10,323 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:10,324 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-11-24 22:09:10,366 INFO L144 ThreadInstanceAdder]: Constructed 17 joinOtherThreadTransitions. [2023-11-24 22:09:10,370 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:10,376 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:10,397 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:10,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:10,397 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:10,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:10,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (18)] Waiting until timeout for monitored process [2023-11-24 22:09:10,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:10,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2044374124, now seen corresponding path program 1 times [2023-11-24 22:09:10,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:10,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231648608] [2023-11-24 22:09:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231648608] [2023-11-24 22:09:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231648608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959794827] [2023-11-24 22:09:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,444 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:10,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:10,445 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-24 22:09:10,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 105976423, now seen corresponding path program 1 times [2023-11-24 22:09:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019131410] [2023-11-24 22:09:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019131410] [2023-11-24 22:09:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019131410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:10,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961825240] [2023-11-24 22:09:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,658 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:10,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,659 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-24 22:09:11,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:11,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 896859792, now seen corresponding path program 1 times [2023-11-24 22:09:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401532118] [2023-11-24 22:09:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:12,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:12,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:12,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:12,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-24 22:09:12,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:12,293 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:12,293 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-11-24 22:09:12,350 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-24 22:09:12,354 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:12,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:12,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (19)] Waiting until timeout for monitored process [2023-11-24 22:09:12,363 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:12,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:12,364 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:12,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:12,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:12,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:12,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2053535636, now seen corresponding path program 1 times [2023-11-24 22:09:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:12,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553565599] [2023-11-24 22:09:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553565599] [2023-11-24 22:09:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553565599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:12,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289840468] [2023-11-24 22:09:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:12,424 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:12,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:12,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-24 22:09:12,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:12,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1359259093, now seen corresponding path program 1 times [2023-11-24 22:09:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:12,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261249691] [2023-11-24 22:09:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:12,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:12,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261249691] [2023-11-24 22:09:12,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261249691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:12,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:12,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:12,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327741598] [2023-11-24 22:09:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:12,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:12,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:12,657 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:12,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:12,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:12,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-24 22:09:14,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1846270023, now seen corresponding path program 1 times [2023-11-24 22:09:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93926810] [2023-11-24 22:09:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:14,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:14,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:14,537 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:14,537 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:14,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:14,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:14,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:14,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:14,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-24 22:09:14,540 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:14,540 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:14,540 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-11-24 22:09:14,589 INFO L144 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2023-11-24 22:09:14,593 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:14,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:14,597 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:14,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2023-11-24 22:09:14,604 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:14,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:14,605 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:14,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:14,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:14,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 987530348, now seen corresponding path program 1 times [2023-11-24 22:09:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:14,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464963420] [2023-11-24 22:09:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:14,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464963420] [2023-11-24 22:09:14,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464963420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:14,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:14,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:14,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692598404] [2023-11-24 22:09:14,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:14,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:14,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:14,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:14,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,653 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:14,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:14,654 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-24 22:09:14,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:14,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1036493997, now seen corresponding path program 1 times [2023-11-24 22:09:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169023470] [2023-11-24 22:09:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169023470] [2023-11-24 22:09:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169023470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:14,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348801738] [2023-11-24 22:09:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,840 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:14,840 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:14,841 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:16,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-24 22:09:16,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:16,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1733440689, now seen corresponding path program 1 times [2023-11-24 22:09:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897327769] [2023-11-24 22:09:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:16,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:17,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:17,162 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:17,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-24 22:09:17,165 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:17,166 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:17,166 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-11-24 22:09:17,213 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-11-24 22:09:17,217 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:17,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:17,224 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:17,231 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:17,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:17,232 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:17,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:17,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2023-11-24 22:09:17,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:17,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1717329812, now seen corresponding path program 1 times [2023-11-24 22:09:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:17,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431553311] [2023-11-24 22:09:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431553311] [2023-11-24 22:09:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431553311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099771184] [2023-11-24 22:09:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:17,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,283 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:17,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:17,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-11-24 22:09:17,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1508651745, now seen corresponding path program 1 times [2023-11-24 22:09:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708015327] [2023-11-24 22:09:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:17,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708015327] [2023-11-24 22:09:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708015327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:17,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404924019] [2023-11-24 22:09:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:17,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,462 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:17,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:17,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:17,463 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-24 22:09:19,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:19,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1908828624, now seen corresponding path program 1 times [2023-11-24 22:09:19,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:19,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893008998] [2023-11-24 22:09:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:19,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:19,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:19,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:19,887 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:19,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:19,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:19,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:19,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:19,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-24 22:09:19,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:19,892 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:19,892 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-11-24 22:09:19,946 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-24 22:09:19,951 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:19,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:19,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:19,968 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:19,985 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:19,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:19,986 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:19,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:20,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2023-11-24 22:09:20,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:20,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1578181524, now seen corresponding path program 1 times [2023-11-24 22:09:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77247278] [2023-11-24 22:09:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77247278] [2023-11-24 22:09:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77247278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593407887] [2023-11-24 22:09:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:20,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:20,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:20,042 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:20,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-24 22:09:20,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:20,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 404761727, now seen corresponding path program 1 times [2023-11-24 22:09:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639400407] [2023-11-24 22:09:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639400407] [2023-11-24 22:09:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639400407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:20,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:20,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585182471] [2023-11-24 22:09:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:20,251 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:20,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:20,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:20,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-11-24 22:09:22,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:22,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:22,518 INFO L85 PathProgramCache]: Analyzing trace with hash 766329358, now seen corresponding path program 1 times [2023-11-24 22:09:22,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031581971] [2023-11-24 22:09:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:22,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:22,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:22,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:22,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:22,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:22,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:22,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:22,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:22,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-11-24 22:09:22,965 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:22,965 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:22,965 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-11-24 22:09:23,020 INFO L144 ThreadInstanceAdder]: Constructed 22 joinOtherThreadTransitions. [2023-11-24 22:09:23,024 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:23,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:23,028 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:23,039 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:23,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:23,039 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:23,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (23)] Waiting until timeout for monitored process [2023-11-24 22:09:23,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:23,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1404975212, now seen corresponding path program 1 times [2023-11-24 22:09:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587617947] [2023-11-24 22:09:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:23,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587617947] [2023-11-24 22:09:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587617947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:23,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:23,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030805763] [2023-11-24 22:09:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:23,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:23,099 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:23,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-11-24 22:09:23,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:23,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -53196755, now seen corresponding path program 1 times [2023-11-24 22:09:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800510174] [2023-11-24 22:09:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800510174] [2023-11-24 22:09:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800510174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583876912] [2023-11-24 22:09:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:23,287 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:23,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:23,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:26,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-11-24 22:09:26,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:26,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash -693013785, now seen corresponding path program 1 times [2023-11-24 22:09:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:26,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832735674] [2023-11-24 22:09:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:26,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:27,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:27,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:27,269 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:27,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:27,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:27,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:27,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:27,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-24 22:09:27,272 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:27,272 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:27,273 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-11-24 22:09:27,321 INFO L144 ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions. [2023-11-24 22:09:27,325 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:27,332 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:27,348 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:27,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:27,351 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:27,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:27,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (24)] Waiting until timeout for monitored process [2023-11-24 22:09:27,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1357794196, now seen corresponding path program 1 times [2023-11-24 22:09:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874499407] [2023-11-24 22:09:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874499407] [2023-11-24 22:09:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874499407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:27,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:27,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759586409] [2023-11-24 22:09:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:27,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,405 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:27,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:27,405 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-24 22:09:27,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:27,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 134776299, now seen corresponding path program 1 times [2023-11-24 22:09:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577935127] [2023-11-24 22:09:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:27,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577935127] [2023-11-24 22:09:27,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577935127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:27,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:27,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575958902] [2023-11-24 22:09:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,594 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:27,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:09:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-24 22:09:31,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:31,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -21579059, now seen corresponding path program 1 times [2023-11-24 22:09:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963928513] [2023-11-24 22:09:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:32,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:09:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:09:32,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:09:32,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:09:32,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-24 22:09:32,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-24 22:09:32,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-24 22:09:32,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-24 22:09:32,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-24 22:09:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-24 22:09:32,344 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-24 22:09:32,344 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:09:32,344 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-11-24 22:09:32,402 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-11-24 22:09:32,407 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:32,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:09:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:32,416 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:09:32,428 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:09:32,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:09:32,429 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=PARTIAL_ORDER_FA, 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;@3ddf5299, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:09:32,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-24 22:09:32,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b29ec3-ee35-46f5-b121-fbdae4d7a97d/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (25)] Waiting until timeout for monitored process [2023-11-24 22:09:32,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:32,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1276555156, now seen corresponding path program 1 times [2023-11-24 22:09:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:32,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758175000] [2023-11-24 22:09:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:32,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:32,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758175000] [2023-11-24 22:09:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758175000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:32,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:09:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104817064] [2023-11-24 22:09:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:32,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:09:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:09:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:09:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:32,490 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:32,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:32,491 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:32,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-24 22:09:32,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-24 22:09:32,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 968680889, now seen corresponding path program 1 times [2023-11-24 22:09:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439754450] [2023-11-24 22:09:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:09:32,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:32,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439754450] [2023-11-24 22:09:32,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439754450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:09:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:09:32,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:09:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128010619] [2023-11-24 22:09:32,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:09:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:09:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:09:32,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:09:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:32,713 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:32,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:09:32,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:32,713 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.