./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-5.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_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/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_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/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_69be4a6f-34d1-452a-ad66-314a70515933/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 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:07:42,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:07:42,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2023-11-24 22:07:42,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:07:42,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:07:42,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:07:42,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:07:42,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:07:42,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:07:42,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:07:42,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:07:42,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:07:42,509 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:07:42,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:07:42,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:07:42,515 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:07:42,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:07:42,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:07:42,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:07:42,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:07:42,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:07:42,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:07:42,520 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-24 22:07:42,521 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:07:42,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:07:42,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:07:42,522 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:07:42,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:07:42,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:07:42,523 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-24 22:07:42,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:07:42,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:07:42,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:07:42,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:07:42,526 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:07:42,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:07:42,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:07:42,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:07:42,527 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-24 22:07:42,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:07:42,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:07:42,528 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:07:42,528 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:07:42,528 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_69be4a6f-34d1-452a-ad66-314a70515933/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d [2023-11-24 22:07:42,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:07:42,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:07:42,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:07:42,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:07:42,887 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:07:42,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-24 22:07:46,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:07:46,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:07:46,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/sv-benchmarks/c/pthread-deagle/floating_read-5.i [2023-11-24 22:07:46,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/data/c1c99c339/d107a4b37f014de79430878ebf889198/FLAGc26509f1b [2023-11-24 22:07:46,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/data/c1c99c339/d107a4b37f014de79430878ebf889198 [2023-11-24 22:07:46,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:07:46,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:07:46,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:07:46,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:07:46,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:07:46,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:07:46" (1/1) ... [2023-11-24 22:07:46,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d503035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:46, skipping insertion in model container [2023-11-24 22:07:46,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:07:46" (1/1) ... [2023-11-24 22:07:46,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:07:46,969 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-24 22:07:46,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:07:46,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:07:47,036 WARN L1590 CHandler]: Possible shadowing of function thread [2023-11-24 22:07:47,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:07:47,074 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:07:47,074 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:07:47,081 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:07:47,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47 WrapperNode [2023-11-24 22:07:47,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:07:47,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:07:47,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:07:47,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:07:47,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,143 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-11-24 22:07:47,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:07:47,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:07:47,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:07:47,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:07:47,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:07:47,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:07:47,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:07:47,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:07:47,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (1/1) ... [2023-11-24 22:07:47,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:07:47,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:47,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:47,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:07:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:07:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:07:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-24 22:07:47,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-24 22:07:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:07:47,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:07:47,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:07:47,256 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 22:07:47,392 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:07:47,394 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:07:47,598 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:07:47,644 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:07:47,645 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:07:47,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:07:47 BoogieIcfgContainer [2023-11-24 22:07:47,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:07:47,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:07:47,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:07:47,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:07:47,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:07:46" (1/3) ... [2023-11-24 22:07:47,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7071b7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:07:47, skipping insertion in model container [2023-11-24 22:07:47,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:07:47" (2/3) ... [2023-11-24 22:07:47,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7071b7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:07:47, skipping insertion in model container [2023-11-24 22:07:47,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:07:47" (3/3) ... [2023-11-24 22:07:47,662 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-5.i [2023-11-24 22:07:47,672 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:07:47,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:07:47,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-24 22:07:47,686 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:07:47,778 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-24 22:07:47,835 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:47,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:47,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:47,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:47,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:07:47,912 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:47,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread1of1ForFork0 ======== [2023-11-24 22:07:47,940 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:47,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:48,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:48,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1136586486, now seen corresponding path program 1 times [2023-11-24 22:07:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:48,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722134866] [2023-11-24 22:07:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:48,398 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 22:07:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722134866] [2023-11-24 22:07:48,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722134866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:48,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:48,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190847000] [2023-11-24 22:07:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:48,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,434 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:48,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 22:07:48,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:07:48,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:48,522 INFO L307 ceAbstractionStarter]: Result for error location threadThread1of1ForFork0 was SAFE (1/2) [2023-11-24 22:07:48,527 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:48,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:48,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:48,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:48,569 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:48,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:07:48,571 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:48,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 22:07:48,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2023-11-24 22:07:48,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:48,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:48,602 INFO L85 PathProgramCache]: Analyzing trace with hash 147015405, now seen corresponding path program 1 times [2023-11-24 22:07:48,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:48,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496869088] [2023-11-24 22:07:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:48,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:48,647 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 22:07:48,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:48,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496869088] [2023-11-24 22:07:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496869088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:48,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819229653] [2023-11-24 22:07:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:48,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,651 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 14.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:07:48,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:07:48,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:48,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 531800422, now seen corresponding path program 1 times [2023-11-24 22:07:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886435813] [2023-11-24 22:07:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:48,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:07:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:48,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:07:48,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:07:48,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-24 22:07:48,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2023-11-24 22:07:48,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2023-11-24 22:07:48,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2023-11-24 22:07:48,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:07:48,837 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 22:07:48,838 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-11-24 22:07:48,838 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:07:48,838 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-24 22:07:48,878 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:07:48,883 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:48,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:48,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:48,924 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:48,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread1of2ForFork0 ======== [2023-11-24 22:07:48,925 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:48,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:48,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-11-24 22:07:49,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:49,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -719266642, now seen corresponding path program 1 times [2023-11-24 22:07:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:49,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631236929] [2023-11-24 22:07:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:49,139 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 22:07:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631236929] [2023-11-24 22:07:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631236929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:49,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:49,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402815658] [2023-11-24 22:07:49,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:49,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,157 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:49,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 22:07:49,160 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:49,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:07:49,377 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:49,377 INFO L307 ceAbstractionStarter]: Result for error location threadThread1of2ForFork0 was SAFE (1/3) [2023-11-24 22:07:49,386 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:49,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:49,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:49,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:49,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2023-11-24 22:07:49,404 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:49,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:07:49,409 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:49,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 22:07:49,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:49,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -326746835, now seen corresponding path program 1 times [2023-11-24 22:07:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:49,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692315970] [2023-11-24 22:07:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:07:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:49,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692315970] [2023-11-24 22:07:49,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692315970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:49,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340600125] [2023-11-24 22:07:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,487 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 14.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:07:49,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:07:49,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:49,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 434060824, now seen corresponding path program 1 times [2023-11-24 22:07:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:49,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869951475] [2023-11-24 22:07:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:49,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:07:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:49,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:07:49,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:07:49,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-24 22:07:49,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2023-11-24 22:07:49,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2023-11-24 22:07:49,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2023-11-24 22:07:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:07:49,753 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 22:07:49,754 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/3) [2023-11-24 22:07:49,754 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:07:49,754 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-24 22:07:49,787 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 22:07:49,797 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:49,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:49,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:49,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:49,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2023-11-24 22:07:49,818 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:49,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:07:49,820 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:49,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 22:07:49,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:49,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1380208493, now seen corresponding path program 1 times [2023-11-24 22:07:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950901822] [2023-11-24 22:07:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:49,879 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 22:07:49,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950901822] [2023-11-24 22:07:49,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950901822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:49,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:49,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:49,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534172820] [2023-11-24 22:07:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:49,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,886 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 14.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:07:49,886 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:07:49,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:49,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1231247895, now seen corresponding path program 1 times [2023-11-24 22:07:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:49,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598383141] [2023-11-24 22:07:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:50,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:07:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:50,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:07:50,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:07:50,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-24 22:07:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2023-11-24 22:07:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2023-11-24 22:07:50,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2023-11-24 22:07:50,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:07:50,047 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 22:07:50,048 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/4) [2023-11-24 22:07:50,048 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:07:50,048 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-24 22:07:50,071 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 22:07:50,073 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:50,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:50,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:50,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:50,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2023-11-24 22:07:50,090 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:50,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread3of4ForFork0 ======== [2023-11-24 22:07:50,092 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:50,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:50,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:50,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1252032487, now seen corresponding path program 1 times [2023-11-24 22:07:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575335540] [2023-11-24 22:07:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 22:07:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575335540] [2023-11-24 22:07:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575335540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221922378] [2023-11-24 22:07:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:50,283 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 30.0) internal successors, (30), 2 states have internal predecessors, (30), 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 22:07:50,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:50,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:50,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:07:50,915 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:50,917 INFO L307 ceAbstractionStarter]: Result for error location threadThread3of4ForFork0 was SAFE (1/5) [2023-11-24 22:07:50,920 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:50,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:50,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:50,944 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:50,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread1of4ForFork0 ======== [2023-11-24 22:07:50,945 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:50,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:50,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-11-24 22:07:51,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:51,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2123379762, now seen corresponding path program 1 times [2023-11-24 22:07:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416545226] [2023-11-24 22:07:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:51,115 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 22:07:51,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:51,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416545226] [2023-11-24 22:07:51,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416545226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:51,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:51,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:51,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293401870] [2023-11-24 22:07:51,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:51,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:51,119 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:51,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 22:07:51,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:51,626 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:51,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:07:51,633 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:51,633 INFO L307 ceAbstractionStarter]: Result for error location threadThread1of4ForFork0 was SAFE (2/5) [2023-11-24 22:07:51,637 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:51,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:51,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:51,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:51,654 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:51,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread2of4ForFork0 ======== [2023-11-24 22:07:51,655 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:51,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:51,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2023-11-24 22:07:51,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:51,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash -712253562, now seen corresponding path program 1 times [2023-11-24 22:07:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:51,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205177474] [2023-11-24 22:07:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 22:07:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205177474] [2023-11-24 22:07:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205177474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:51,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:51,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831322548] [2023-11-24 22:07:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:51,807 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:51,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 29.0) internal successors, (29), 2 states have internal predecessors, (29), 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 22:07:51,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:07:52,233 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:52,236 INFO L307 ceAbstractionStarter]: Result for error location threadThread2of4ForFork0 was SAFE (3/5) [2023-11-24 22:07:52,240 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:52,247 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:52,262 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:52,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread4of4ForFork0 ======== [2023-11-24 22:07:52,263 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:52,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:52,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2023-11-24 22:07:52,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:52,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1447429317, now seen corresponding path program 1 times [2023-11-24 22:07:52,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074030931] [2023-11-24 22:07:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-24 22:07:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074030931] [2023-11-24 22:07:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074030931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208211534] [2023-11-24 22:07:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:52,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:52,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,476 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:52,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 31.0) internal successors, (31), 2 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 22:07:52,476 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:07:52,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:52,911 INFO L307 ceAbstractionStarter]: Result for error location threadThread4of4ForFork0 was SAFE (4/5) [2023-11-24 22:07:52,914 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:52,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:52,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:52,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2023-11-24 22:07:52,922 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:52,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:07:52,923 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:52,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 22:07:52,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:52,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash -857078291, now seen corresponding path program 1 times [2023-11-24 22:07:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:52,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355548829] [2023-11-24 22:07:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:52,976 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 22:07:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355548829] [2023-11-24 22:07:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355548829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538892716] [2023-11-24 22:07:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:52,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:52,979 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:52,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 14.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:07:52,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:07:53,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1170501085, now seen corresponding path program 1 times [2023-11-24 22:07:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244200004] [2023-11-24 22:07:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:53,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:07:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:07:53,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:07:53,173 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:07:53,173 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-24 22:07:53,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2023-11-24 22:07:53,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2023-11-24 22:07:53,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2023-11-24 22:07:53,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:07:53,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 22:07:53,179 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (5/5) [2023-11-24 22:07:53,179 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:07:53,179 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-24 22:07:53,203 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-24 22:07:53,206 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:53,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:53,211 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2023-11-24 22:07:53,220 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:53,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread1of5ForFork0 ======== [2023-11-24 22:07:53,220 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:53,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:53,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash 112042922, now seen corresponding path program 1 times [2023-11-24 22:07:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194762177] [2023-11-24 22:07:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:53,316 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 22:07:53,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194762177] [2023-11-24 22:07:53,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194762177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:53,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371444623] [2023-11-24 22:07:53,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:53,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:53,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:53,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:53,319 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:53,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 22:07:53,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:55,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 22:07:55,481 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:55,482 INFO L307 ceAbstractionStarter]: Result for error location threadThread1of5ForFork0 was SAFE (1/6) [2023-11-24 22:07:55,484 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:55,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:55,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:55,491 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:55,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2023-11-24 22:07:55,510 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:55,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread2of5ForFork0 ======== [2023-11-24 22:07:55,510 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:55,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:55,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1568852424, now seen corresponding path program 1 times [2023-11-24 22:07:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005175298] [2023-11-24 22:07:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 22:07:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005175298] [2023-11-24 22:07:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005175298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003295093] [2023-11-24 22:07:55,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:55,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:55,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:55,675 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:55,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 29.0) internal successors, (29), 2 states have internal predecessors, (29), 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 22:07:55,675 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:57,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:57,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 22:07:57,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:57,577 INFO L307 ceAbstractionStarter]: Result for error location threadThread2of5ForFork0 was SAFE (2/6) [2023-11-24 22:07:57,580 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:57,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:57,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:57,593 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:57,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == threadThread3of5ForFork0 ======== [2023-11-24 22:07:57,594 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:57,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:07:57,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (14)] Waiting until timeout for monitored process [2023-11-24 22:07:57,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr0ASSERT_VIOLATIONDATA_RACE] === [2023-11-24 22:07:57,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash -910048475, now seen corresponding path program 1 times [2023-11-24 22:07:57,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426349601] [2023-11-24 22:07:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 22:07:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426349601] [2023-11-24 22:07:57,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426349601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739245435] [2023-11-24 22:07:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:57,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:57,732 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:57,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 30.0) internal successors, (30), 2 states have internal predecessors, (30), 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 22:07:57,732 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:59,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 1 remaining) [2023-11-24 22:07:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 22:07:59,193 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 22:07:59,194 INFO L307 ceAbstractionStarter]: Result for error location threadThread3of5ForFork0 was SAFE (3/6) [2023-11-24 22:07:59,195 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:59,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:07:59,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:59,199 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:07:59,213 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:07:59,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:07:59,214 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;@afaf3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:07:59,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 22:07:59,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (15)] Waiting until timeout for monitored process [2023-11-24 22:07:59,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:59,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:59,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1020995949, now seen corresponding path program 1 times [2023-11-24 22:07:59,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757441503] [2023-11-24 22:07:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:59,255 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 22:07:59,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757441503] [2023-11-24 22:07:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757441503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:07:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:07:59,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:07:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606886472] [2023-11-24 22:07:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:07:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:07:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:07:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:07:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:07:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:59,258 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:07:59,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 14.0) internal successors, (14), 2 states have internal predecessors, (14), 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 22:07:59,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:07:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 22:07:59,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:07:59,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:07:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1354647676, now seen corresponding path program 1 times [2023-11-24 22:07:59,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:07:59,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836638701] [2023-11-24 22:07:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:59,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:07:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 88 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:07:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:07:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836638701] [2023-11-24 22:07:59,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836638701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:07:59,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470451627] [2023-11-24 22:07:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:07:59,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:07:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:07:59,761 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:07:59,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 22:07:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:07:59,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 22:07:59,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:08:00,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:08:00,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470451627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:00,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:08:00,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2023-11-24 22:08:00,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078096022] [2023-11-24 22:08:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 22:08:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 22:08:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-24 22:08:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,064 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 22:08:00,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,065 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 22:08:00,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:00,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69be4a6f-34d1-452a-ad66-314a70515933/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:00,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:08:00,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1567728534, now seen corresponding path program 1 times [2023-11-24 22:08:00,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:00,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722015590] [2023-11-24 22:08:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:00,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-24 22:08:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722015590] [2023-11-24 22:08:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722015590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:00,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:08:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675531128] [2023-11-24 22:08:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:08:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:00,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:08:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:08:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,689 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:00,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 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 22:08:00,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-24 22:08:00,689 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 22:08:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:08:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 22:08:00,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-11-24 22:08:00,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1068414785, now seen corresponding path program 1 times [2023-11-24 22:08:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:00,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692026154] [2023-11-24 22:08:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-24 22:08:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692026154] [2023-11-24 22:08:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692026154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:08:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005653785] [2023-11-24 22:08:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:08:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:08:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:08:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:01,317 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:01,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 22:08:01,317 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:01,317 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2023-11-24 22:08:01,317 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:08:01,317 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.